Home

Power Electronics Products List

1. Ihp Single phase Permanent capacitor induction motor 230V AC Input 1400 rpm Spring balance load setup Speed sensor with digital speed indication with speed feedback facility 0 5V Isolation Transformer Used for power circuit input voltage isolation Input 230V AC Output 110 0 110V AC IKVA Capacity 2 Speed Control of Slip Ring Induction Motor Using IGBT Chopper PECI4HV10 A T SE De Ge ears See tel This module consists of three blocks L Motor mounted on a mechanical frame 2 Three phase converter inverter 3 Inverter firing control circuitry Main Features X Rotor voltage is controlled to vary the motor speed One transformer to feedback the recovered power to the line Efficiency is improved by returning power into AC system bus Wound rotor Induction motor mounted on a mechanical frame 3hp 3 1410 rpm slip ring induction motor Optical encoder with Optional One DC Generator coupled with motor to load the motor Optional Entire control circuit mounted inside a compact box Mimic circuit is drawn in the front panel Many test points are provided along with front panel A Nice text lab manual is provided speed motor 3 DC Position Control System PEC 01 This trainer system is a compact amp advanced version for class room experiment set up for the students to operate and study a practical position control system A variety of Experiments can
2. Study of Speed control of AC motor using Cyclo Convertor Single Phase Mc murray bed Ford Full Bridge Inverter VPET 111A Four isolated gate pulses are provided to fire the Four number of SCRs One Potentiometer provided to vary the frequency of the inverter from 10Hz 50 Hz One Potentiometer provided to vary the frequency of the inverter All gate pulses are Isolated by pulse isolation transformer Four SCRs rated 1200V 25A provided Two Diodes rated 1200 V 6A provided 4 Nos of Commutating capacitors and 1 No of center tapped inductors Rating at 120mH 4A provided All SCRs Diodes Capacitors amp Inductors forms Single phase inverter with 180 mode conduction DC Input of inverter fed from three phase SCR converter 11 12 X Three Phase Mc murray bed Ford Full Bridge Inverter VPET 111 Six isolated gate pulses are provided to fire the six number of SCRs One Potentiometer provided to vary the frequency of the inverter from 10Hz 50 Hz One Potentiometer provided to vary the frequency of the inverter All gate pulses are Isolated by pulse isolation transformer Six SCRs rated 1200V 25A provided Six Diodes rated 1200V 6A provided 6 Nos of Commutating capacitors and 3 Nos of center tapped inductors Rating at 120mH 4A provided All 6 Nos of SCRs Diodes Capacitors amp Inductors forms 3 phase inverter with 180 mode conduction DC Input of inverter fed from three phase SCR converter T
3. 20 3 hp slip ring motor generator load set up aera tue PEC HV ACC3 W 21 3 hp slip ring motor eddy current load Pee SOE DEES ay janice Power lhp 75kw shunt type 22 1 hp pmdc motor spring balance load Armature voltage 18Q0vdc 5 lamp set up PEC HV ACC3J l Field voltage 220vdc 0 3amp 23 1 hp pmdc motor generator load set up Speed 1500 rpm PEC HV ACC3K l Double side shaft extension 24 1 hp PMDC motor eddy current load Make benn set up PEC HV ACC3L 71 DC Generator Spec 4 440V DC MOTOR LOAD SET UP PEC HV ACC3D Power Ihp 6kw shunt type Armature voltage 180VDC 2 7amp This set up consists of one number of 1 dc shunt Field voltage 220VDC 0 3amp motor coupled with 2 mechanical spring balance Speed 1500 rpm load set up Double side shaft extension Make benn DC Motor Spec Both motor and generator are coupled with base Power Ihp 75kw plate Armature voltage 440vdc 2amp Field voltage 220vdc 0 3amp 3 1 HP DC MOTOR EDDY CURRENT Speed 1500 rpm LOAD SET UP PEC HV ACC3C Double side shaft extension Make benn 5 440V DC MOTOR GENERATOR LOAD SET UP PEC HV ACC3E This set up consists of one number of 1 dc shunt motor coupled with 2 1 HP dc shunt generator act as load DC Motor Spec This set up consists of one number of 1 DC shunt motor coupled with 2 Eddy current load set up Power lhp 75kw shunt type Armature voltage 440vdc 2amp DC Motor Spec Field voltage 220vdc 0 3amp Speed 1500 rpm Power lh
4. 230V 50Hz AC input fuse provided for over load protection One no rocker switch for power ON OFF Consists of firing circuit SCR power circuit and load Line synchronized IC based linear firing circuit for SCR Line synchronization achieved by 230 9V step down transformer Four no firing pulse to trigger SCR 1 1 Pulse transformer used for SCR gate pulse isolation One no potentiometer used to vary the firing angle 180 Od Carrier logic implemented carrier frequency 4KHz One no toggle switch with debounce logic for pulse ON OFF Provision to control the firing angle through external 0 5V Power circuit consists of two No s SCR and two power diode with fuse protection Anode Cathode Gate terminals are terminated in the front panel for user connection 24V AC LAMP provided for power circuit input with ON OFF switch One no fixed R L load provided 230V 50Hz AC input with ON OFF rocker switch fuse for over load Suggested Experiments Suggested Experiments 1 Single phase half controlled converter 1 Single phase AC regulator using with R and R L load TRIAC with R and RL load 11 3 Single Phase SCR Fully Controlled 4 Forced Communication Circuits Bridge Converter PEC14M14FW Class A B C D amp E Communication a Chopper Circuit Module PEC14M14CH Wa Consists of firing circuit SCR power circuit and load Line synchronized IC based linear firing circuit Line
5. ae Se i SCR TRIAC DIAC Device Module PEC14M15 L C Module PEC14MS5A SCR Module VPET 106S TRIAC Module VPET 106T DIODE Module VPET 106D Page No WWwWN NY NY Fe P N AODA M 10 10 10 10 HI LOW VOLTAGE SCR APPLICATION TRAINER IV oo se 10 EL i 13 Single Phase AC Voltage Controller using SCR and TRIAC PECI4M14AC Single Phase SCR Half Controlled Bridge Convertor PEC14M14HW Single Phase SCR Fully Controlled Bridge Converter PEC14M14FW Forced Communication Circuits Class A B C D amp E Communication Chopper Circuit Module PEC14M14CH SCR Based DC Chopper Circuit PEC14M14CH 1 Single Phase Cyclo Converter PECI4M14CY Single Phase SCR Full Bridge Inverter PECI4M14 INV SCR Series Inverter PECI14M6 SCR Parallel Inverter PEC14M7 Morgans Chopper Circuit Trainer PEC14M20 Jones Chopper Trainer Module PEC14M21 UJT Firing Circuit for SCR Converter PEC14M12B Controlled HWR and FWR using RC firing PECI4M12C HIGH VOLTAGE SCR APPLICATION TRAINER eee Ee a a ee Wo NO Single Phase Half amp Fully Controlled Bridge Converter PECI4HV4 Three Phase Half amp Fully Controlled bridge converter PECI4HV5 Single Phase Dual Converter PEC20M1 amp 20M2 Three Phase Dual Convertor PEC20M3 amp 20M4 Thyristor Chopper for SCR DC Drive PECI4HV7 Single Phase Parallel Inverter High Voltage PECI4M7HV Three Phase Parallel Inverter PEC14M7HV1 Single Phase Se
6. One no auto transformer used to vary the 24V AC 0 24V AC One no analog voltmeter indicate the AC output voltage 0 30V AC Fuse amp LED provided Used for line regulation SMPS CONTROLLER IRF250 MOSFET based forward converter TL 494 Used for PWM generation PWM frequency at 63KHz APP 6N137 Opto used for pulse isolation One potentiometer used to vary the frequency of PWM study module One potentiometer used to vary the ref voltage of controller S M Provision to select single multi output Output filtered by LC filter Varies fault analysis switches 60 Electronic Load X Transistor based single quadrant chopper circuit load instead of resistive load Separate circuits for PWM generation One potentiometer used to vary the duty cycle ratio so as load current Voltmeter Ammeter for output voltage Used for LOAD regulation Specification n n Input 0 24V AC Output 5V 2Amp single output SV 2Amp 12V 5A 12V 5A 2 PUSH PULL INVERTER PEC16M11 Two nos of IRF840 MOSFET used as a power device High frequency transformer used to isolate the output signals TL494 used to generate PWM for MOSFET Two nos of Potentiometer used to vary duty cycle ratio frequency of PWM 24V DC Input 12V DC Output 1 Amp Necessary test points 3 DC Series Resonant Converter Trainer VPET 315 os Epe a Aa zy vise Series loaded series
7. d Battery Charger 1 Solar panel based battery charger 1 SCR Mains converter based battery charger i Solar Panel based Battery Charger x IKW 0 5KW solar panel with necessary accessories to charge 24 48V Battery ii SCR Mains converter based battery X charger 2 Nos of SCR amp Diode forms 10 half controlled converter for battery charging 230V AC Input 24 48V DC output One no of LC Filter Two no of pulse transformer for pulse isolation and pulse amplification circuits Technical Specifications Input 24V 48V DC Output 1 230V Sine wave output Capacity IKW Protection Circuit Inverter over current shut down with buzzer indication Battery deep discharge and over charge cut off protection with indication Battery over current cut off protection with indiction PC Based Software Windows based powerful software to operate the DSP based UPS trainer system It displays all parameters of UPS Inverter Voltage Inverter current Battery voltage Battery current Temperature ON line OFF line mode of operation RS232 interface provision to UPS H H HH H 6 IGBT Based Three Phase PWM Inverter PECI6HV2A This trainer consists of three sections a Digital controller for 1 Sine PWM amp Multiple PWM _ generator 1 PWM Generation for 3 phase AC Drive 11 PWM Generation for 3 phase UPS b 3 Phase IGBT Based power module c Battery with charger Optional a d
8. voltage and field current voltage measurement Suggested Experiments 1 Determination of transfer function of armature controlled DC motor A Speed Vs Armature voltage transfer function B Speed Vs torque transfer function C Armature current Vs voltage transfer function D Current Vs torque trans function Determination of transfer function of field controlled DC motor 35 16 Ward Leonard Speed Control System of DC Shunt PECI4HV2 Motor This trainer is designed to drive the 1HP DC motor optional using ward Leonard system so that varies parameters of DC motor can be found experimentally It consists of 1 1HP AC motor coupled with 1HP DC generator 2 1HP DC motor with mechanical loading arrangement SCR based fully controlled converter for field voltage variation 0 200V DC variable 1AMP of DC generator One no SCR based AC regulator for motor generator winding inductance measurement 0 100V AC LAMP variable It consists of One no diode bridge converter for DC motor filed voltage 200V fixed One no DPM for field voltage measurement One no potentiometer used to vary field DC voltage One no toggle switch to reverse the voltage Over current field failure protection MCE for input ON OFF Suggested Experiments l 17 Determination of transfer function of armature controlled DC motor A Speed Vs Armature voltage transfer function B
9. 1 8085 microprocessor kit 2 SCR firing pulse interface chord with SCR device module PEC18MP1 Microprocessor Trainer 8085 Microprocessor Micro 85eblII 8KB RAM 8KB EPROM One 8255 port to provide 24 TTL I O lines 21 Keys multifunction key board with double short characters for long life 6 Digit 7 segment display SCR Firing Pulse Interface Chord PECI8MP1 x One no of line synchronized ZCD generator 230V 9V step down transformer used for line synchronization One no of 26 pin header to interface microprocessor kit Two no s of pulse amplifier with pulse isolation circuits Two No s of 1 1 pulse transformer provided for gate pulse isolation All four pulses terminated in the PCB for SCR interface with Four No s of TYN612 SCR with snubber circuit provided for power circuit All A K G terminals are terminated for external power circuit configuration One no of 230V 24V AC 2Amp provided for SCR power circuit input One no of fixed resistor lamp used as a load Suggested Experiments 1 Single phase half fully controlled converter with R amp L load 2 Single phase AC regulator with R amp L load 9 Microprocessor Based Three Phase SCR Triggering Circuit Trainer PECI8MP2 This trainer consists of 1 8085 microprocessor kit 2 SCR firing pulse interface chord with SCR device module PECI8MP2 Microprocessor Trainer 8085 Microprocessor Micro
10. 85eblII 8 KB RAM 8KB EPROM One 8255 port to provide 24 TTL I O lines 21 Keys multifunction key board with double short characters for long life 6 Digit 7 segment display SCR Firing Pulse Interface Chord PECI8MP2 Three No s of line synchronized ZCD generator 230V 9V Three phase step down transformer used for line synchronization One No s of 26 pin header to interface microprocessor kit Six No s of pulse amplifier with pulse isolation circuits Six No s of 1 1 pulse transformer provided for gate pulse isolation All six pulses terminated in the PCB for SCR interface with ON OFF Switch SCR Power Circuit PECI4HV P Six No s of TYN612 SCR with snubber circuit provided for power circuit All A K G terminals are terminated for external power circuit configuration One no three phase 230V 24V AC 2Amp transformer provided for SCR power circuit input Suggested Experiments 1 Three phase fully controlled converter with Lamp load 2 Three phase AC regulator with R amp L load 10 SCR Triggering Circuit Trainer PEC14M12EF This setup consists of the following basic firing circuits to trigger SCR a R RC Triggering circuits b Basic DC Triggering circuit c UJT Triggering circuit d Micro controller based triggering circuit a R RC Triggering circuit x One no of resistor and one no of capacitor forms R RC firing circuit Potentiometer use
11. Make Benn Volts 400 440V 3 phase 50 Hz 0 75 KW 1 hp RPM 1440 2 5 Amps Rotor Volts 210 Volt One no of 3 phase bridge rectifier is provided to convert rotor circuit volt 13 210V to DC One no of L amp R provided for DC filtering Necessary test points provided for easy study Entire control circuit mounted inside a compact box Mimic circuit is drawn in the front panel Many test points are provided along with front panel A Nice text lab manual is provided Power Supply Input 230V 10 3 phase AC 15V DC 0 5A regulated output for the control circuitry VI STANDALONE SCR TRAINERS 1 UJT Characteristic and Oscillator Study Module PEC14M5 This module has been designed to study and demonstrate the building up a UJT Relaxation Oscillator and use this circuit to trigger a SCR This circuit also provides a Time Delay Most of the circuit points are terminated on SPRING the individual components can be inserted externally by students which makes a student a deep understanding in the UJT Relaxation circuit X UJT Relaxation Oscillator is used to generate triggering pulses for SCR By using UJT Relaxation Oscillator the SCR is working as a ON DELAY TIMER and AC Regulation Circuits to study UJT Relaxation Oscillator Most of the circuit points are terminated on spring so that components can be inserted externally Maximum components can be inserted through spr
12. Transfer Function of DC Motor Generator Transfer Function Study Trainer PECI4HV1 Ward Leonard Speed Control System of DC Shunt Motor PECI4HV2 Microcontroller based Slip Ring induction Motor Speed Control using Static Krammer Drive PECI6HV10B DSP Based Static Krammer Drive PECI6HV10C STANDALONE SCR TRAINERS ee ae ee UJT Characteristic and Oscillator Study Module PEC14M5 Digital Measurement of Phase Angle PECI4M9 AC Solid State Relay using Opto coupler Isolation PEC14M10 SCR Ring Counter Module PECI4M11 Fast Recovery Diode Characteristics Study Module VPET 304 AC Phase Control using SCR TRIAC amp DIAC PEC14M272 SCR DC Circuit Breaker VPET 100 Zero Voltage Switching using SCR TRIAC PEC14M19 1 25 20 a 28 29 29 30 31 31 32 33 33 34 36 38 38 39 39 39 40 40 Al 41 PART IL IGBT MOSFET RELATED PRODUCTS I IGBT MOSFET STATIC AND DYNAMIC CHARACTERISTICS TRAINER I Hl BJT IGBT MOSFET Characteristics Trainer PEC16M1 2 IGBT MOSFET SCR amp TRIAC Characteristics SS a Study Trainer PECI6M1 A IGBT Characteristics Trainer VPET 202 Transient Characteristics of SCR and MOSFET VPET 216 Dynamic Characteristics of MOSFET BJT amp IGBT VPET 216A1 Characteristics of MOSFET amp IGBT VPET 202A IGBT MOSFET BASED LOW VOLTAGE APPLICATION TRAINERS CON ADA AWN S MOSFET Module VPET 106M IGBT Module VPET 106I Single Pha
13. l 1 hp three phase AC induction motor mechanical loading PEC14HVACC13 n n n Make Siemens Fixed on a mechanical frame One optical encoder is provided for the speed measurement The output of optical encoder is signal conditioned amp calibrated to indicate the speed of the DC motor amp display on a 31 2 digit display Synchro Transmitter and Receiver PEC 03 Two number of torque synchro used as a transmitter and receiver Rotor Voltage 50V AC 50Hz Induced Stator Voltage 22V AC 50Hz three phase The input and output angular displacement is indicated in a round dial marked with angular position 0 360 Rotor R1 R2 and Stator S1 S2 S3 terminals of transmitter amp receiver are terminated by banana connector in the base plate One no of Digital AC Voltmeter used to indicate stator rotor voltage of transmitter or receiver One no of 230V S50V AC Step down transformer for rotor voltage input Two nos of ON OFF switch for rotor voltage of transmitter receiver One no of power ON OFF switch with indication All are mounted on a nice cabinets V DC DC CONVERTER TRAINER SMPS 1 Single amp Multiple Output SMPS X Trainer VSMPS 02 This set up consists of three separate modules 1 Input power module 2 SMPS controller 3 Electronic load Input Power Module X r oe k S 230V 24V 3Amp step down transformer Used to give isolated 24V AC for SMPS input
14. provided to sense the speed Double side shot extension with speed indication Mechanical loading arrangement sensor b Variable AC DC Source x One no of IGBT based variable DC power supply using chopper circuit provided for both armature and field circuit Over load protection for armature section is provided One no variable AC source for motor inductance measurement One no of DC digital voltmeter 0 50V provided for Armature voltage measurement One no of DC digital ammeter 0 5A provided for Armature current measurement One no of 0 50V DC digital meter provided for Field Voltage measurement One no of 0 2A DC digital ammeter provided for field current measurement One no of 0 50V AC digital Voltmeter for AC Voltage measurement One no of O 1 A AC digital ammeter for AC current Measurement One no of Digital stop clock provided for time Suggested Experiments x Determination of Armature amp Field parameters Determination of Motor mechanical parameters Derivation of Transfer Function of Separately excited Motor b Transfer function of DC Servo Motor This setup consists of 100W DC Separately excited DC servo Motor setup b Manual a 100W Separately Excited DC Servo Motor Armature Voltage 0 48V DC 2 7 Amp Field Voltage 0 48V DC Shunt type separately excited Speed 1500 rpm Rating 100W One Optical Encoder provided to sense the speed One 3
15. 1 hp 440vdc shunt motor generator load set up PEC HV ACC3E 6 1 hp 440v dc shunt motor eddy current load set up PEC HV ACC3F 7 1 hp dc series motor spring balance load set up PEC HV ACC3G 8 lhp dc series motor generator load Set up This set up consists of one number of 1 dc shunt motor coupled with 2 mechanical spring balance load set up with PEC HV ACC3H 9 1 hp dc series motor eddy current load DC Motor Spec set up PEC HV ACC3I 10 3 hp dc shunt motor spring balance load Power Lhp 75kw set up PEC HV ACC3M Armature voltage 180vdc 5 lamp 11 3 hp dc shunt motor generator load set up Field voltage 220vdc 0 3amp PEC HV ACC3N Speed 1500 rpm 12 3 hp de shunt motor eddy current load Double side shaft extension set up PEC HV ACC30 Make 13 1 hp single phase ac motor motor spring balance load set up PEC HV ACC3P 14 1 hp single phase acmotor dc generator load set up PEC HV ACC3Q 15 1 hp single phase ac motor eddy current load set up PEC HV ACC3R 16 1 hp three phase ac motor motor spring balance load set up PEC HV ACC3S 17 1 hp three phase acmotor dc generator load set up PEC HV ACC3T 18 1 hp three phase ac motor eddy current load set up PEC HV ACC3U 19 3 hp slip ring motor spring balance load set up PEC HV ACC3V benn 2 1 HP DC MOTOR GENERATOR LOAD SET UP PEC HV ACC3B This set up consists of one number of 1 dc shunt motor coupled with 2 1 HP dc shunt generator
16. 2AMP DC power supply with S C O C protection 13 Consists of firing circuit SCR power circuit and load Line synchronized IC based linear firing circuit Line synchronization achieved by step down transformer Four No s firing pulse with pulse transformer isolation to trigger four SCR One no potentiometer used to vary the firing angle 180 0 Carrier logic implemented carrier frequency 4KHz One no toggle switch with debounce logic for pulse ON OFF EPROM Based firing pulse frequency variation Two No s toggle switch to select different frequency 50 50 2 50 3 50 4 Hz Power circuit consists of four No SCR with fuse protection Anode Cathode Gate terminals are terminated in the front panel for user connection 7 Single 24V AC 1AMP Provided for power circuit input with ON OFF switch One no fixed R load provided Center tapped inductor for power circuit 230V 50Hz AC input with ON OFF rocker switch fuse for over load Suggested Experiments Single phase cyclo converter with different output frequency with the different voltage Phase SCR Full Bridge Inverter PECI4M14 INV Consists of SCR power circuit and firing circuit 4046 IC based square wave generation with adjustable frequency One no potentiometer used to vary the frequency 10 100Hz 1 1 Pulse transformer used for gate pulse isolation Pulse output terminated in the front panel for user patching P
17. DC MOTOR GENERATOR LOAD SET UP PEC HV ACC3B This set up consists of one number of 1 DC shunt motor coupled with 2 1 HP dc shunt generator act as load DC Motor Spec Power 3HP 2 2kw shunt type Armature voltage 180VDC 15 lamp Field voltage 220VDC 0 8amp Speed 1500 rpm Double side shaft extension Make benn DC Generator Spec Power 3HP 1 8kw shunt type Armature voltage 180VDC 7amp Field voltage 220VDC 0 8amp Speed 1500 rpm Double side shaft extension Make benn Both motor and generator are coupled with base plate 15 3 HP DC MOTOR EDDY CURRENT LOAD SET UP PEC HV ACC3C This set up consists of one number of 1 DC shunt motor coupled with 2 eddy current load set up DC Motor Spec Power 3HP 2 2kw Armature voltage 180VDC 15 lamp Field voltage 220VDC 0 8amp Speed 1500 rpm Double side shaft extension Make benn Eddy Current Load Set up 3 HPrating 0 80V 3amp current rating 1500 rpm speed Electronic DC voltage controller provided for torque variation 75 Torque sensor with torque indicator Speed sensor with speed indicator Both motor and eddy set up coupled with base plate 16 1 HP SINGLE PHASE INDUCTION MOTOR LOAD SET UP PEC HV ACC3M This set up consists of one number of 1 single phase ac motor coupled with 2 mechanical spring balance load set up AC Motor Spec Power 1HP Single phase permanent capacitor type 230VAC 50Hz input Speed 1400 rpm Speed sensor with speed indi
18. MT2 G terminals are terminated individually for external connection One no DIAC with fuse protection MT1 MT2 terminals are terminated for external connection 24VDC 2A unregulated power supply for device DC operation One no fuse provided for DC power supply over current protection One no toggle switch for ON OFF 24VDC supply Snubber circuit provided for all power devices Low voltage isolation transformer provided for power circuit input Input 230V AC 50HZ Output 24 0 24V AC 3AMP Suggested Experiments L 2 gt Line commutated converter regulator applications Inverter applications DC chopper applications 2 L C MODULE PEC14MS5A Inductance 120 H 4 Amp Air core inductor with six tappings Each tapping is percentage of 120mH 0 10 20 30 50 75 90 100 Combination of capacitors Used for various commutation circuits in chopper circuit Housed in a box with sockets termination for all inductors and capacitors tappings commutation 3 SCR Module VPET 106S X It consist of one number of SCR metal package with heatsink is provided SCR rating is 1200v SOAmps SCR with heatsink is fixed on a open wooden box with G A K terminals are brought out by banana socket RC snubber circuit and fuse are provided 10 4 TRIAC Module VPET 106T It consist of one number of TRIAC metal package with heatsink is provided TRIAC BTA12 with sating
19. Speed Vs torque transfer function C Armature current Vs voltage transfer function D Current Vs torque trans function Micro Controller Based Slip Ring Induction Motor Speed Control Using Static PEC16HV10B Krammer Drive This is designed for microcontroller controlled static slip power recovery drive in constant torque mode for steady analysis including effects of core loss and saturation state and transient state This hardware will be suitable for speed control of Slip Ring Induction motor and monitoring many motor parameters for research purpose The full system consists of a 3 phase sip ring induction motor with mechanical loading 3 phase converter to convert the rotor output to a DC link voltage A R L filter to smoothern amp reduce the ripple in the DC output voltage of the converter A 3 thyristorised inverter controlled by a phase line commutated Microcontroller based system 36 The microcontroller based system 1s meant to provide firing pulses to thyristors of the inverter amp motor all motor parameters etc Detailed Specifications X X Slip Ring Induction Motor 1 H P 3 Phase 400V 440V 50Hz 0 75 KW R P M 1440 with suitable rotor volts 210V or so and current 6 amp rating continuously Make Benn Volts 400 440V 3 phase 50 Hz 0 75 KW 1 hp RPM 1440 2 5 Amps Rotor Volts 210 Volt DC Generator as Load Make Kirloskar Grampton Greaves 5
20. be conducted using this Trainer system The DC motor position control trainer consists of 1 Controller 2 Converter 3 Mechanical Setup Controller 2 Analog PI controller provided for speed control amp position control One Optional Each PI controller provided with Front panel variable setting for a Variable gain for Proportional controller P b Variable Integral Time for Integral controller 1 Converter 4 Quadrant MOSFET chopper provided for forward amp reverse direction MOSFET driver provided 56 Mechanical Setup One PMDC 12 volt with Gear provided Motor speed 1500 rpm Gear ratio 30 1 to run 50rmp speed k One Servo potentiometer provided at the low speed shaft Optionally one PMDC Motor can be coupled to the motor as load Other Features One Tachogenerator is provided for speed feedback One 31 2 digit display can be used to display the actual amp reference position 3 digit 4 DSP Based DC Motor Position Control VPET 107 This trainer system is a compact amp advanced version for class room experiment set up for the students to operate and study a practical position control system A variety of Experiments can be conducted using this Trainer system The DC motor position control trainer consists of 1 DSP based Controller 2 Converter 3 Motor Setup DSP Based Controller One powerful DSP controller with software 16x2 Alphanumeric display provided to di
21. loop Input 440V AC 3 phase Output 0 415V variable AC and 10 50 Hz variable frequency Current SAmp 4 Speed Control of DC Shunt Motor using Three Phase Fully Controlled Converter VPET 301 This set up is designed for speed control of dc motor both armature and field control method Separate PID controller can be used for armature closed operation 26 It consists of SCR based three phase fully controlled converter for dc motor armature circuit SCR based single phase half controlled converter for motor field circuit Digital PID controller for closed loop operation 1 hp 440vdc shunt motor set up a Scr three phase fully controlled converter for armature voltage variation Three number of TCA785 phase control ic provided for three phase scr firing pulse generation One number of potentiometer provided for firing angle variation 180 QOdegree Three phase step down transformer provided for supply synchronization Six number of Pulse transformer provided for scr pulse isolation One number of Spdt switch provided for pulse on off All six pulses are terminated on the front panel for power circuit connection Test points provided for wave form measurement Connector provided for external 0 5v control for closed loop operation One number of spdt switch provided for internal external mode selection Six number of tynl225 scr with suitable snubber and heat sink provided for Power circui
22. oe ae a Single amp Multiple Output SMPS Trainer VSMPS 02 Push Pull inverter PEC16M11 DC Series Resonant Converter Trainer VPET 315 MOSFET Based Buck Converter VSMPS 05A MOSFET Based Boost Converter VSMPS 06A MOSFET Based Buck Boost Converter VSMPS 07A MOSFET Based Forward Converter VSMPS 08A MOSFET Based Fly Back Converter VSMPS 09A PART HI OTHER PRODUCTS I POWER ELECTRONICS TRAINERS FOR POLYTECHNICS CO NAAR WN SE Single Phase Half Controlled Converter VPET 204 Single Phase Fully Controlled Converter VPET 205 Three Phase Fully Controlled Converter VPET 215 Three Phase Half Controlled Converter VPET 218 RAMP amp PEDESTAL Trigger Circuit for AC Load VPET 203 Three Phase AC Voltage Regulator Trainer VPET 215B DC Chopper Trainer VPET 208 Line Synchronized UJT Triggering Module VPET 200 Lamp Control using DIAC amp TRIAC VPET 201 10 Basic Series Inverter Trainer VPET 207 11 Single Phase Cyclo Converter Module VPET 209 54 33 56 56 57 58 59 60 60 6l 6l 6l 6l 62 63 63 64 64 64 65 65 65 66 66 66 12 DC Motor Speed Control Trainer VPET 211 13 Speed Control Circuit for Universal Motor VPET 212 14 Closed Loop Control of FHP AC Induction Motor VPET 213 15 DC Motor Speed Control Trainer Closed Loop VPET 214 PART IV POWER ELECTRONICS ACCESSORIES 1 LOW VOLTAGE ACCESSORIES a Resistive Load PEC LVACC1 b Inductive Load PEC LVACC7
23. of 600V 12A TRIAC with heatsink is fixed on a open wooden box with G MT1 MT2 terminals are brought out by banana socket RC snubber circuit and fuse are provided 5 DIODE Module VPET 106D It consist of one number of diode metal package with heatsink is provided Diode rating is 1200v SOAmps Diode with heatsink is fixed on a open wooden box with A K terminals are brought out by banana socket RC snubber circuit and fuse are provided IMH LOW VOLTAGE SCR APPLICATION TRAINER 2 Single phase AC regulator using SCR 2 Single Phase SCR Half Controlled 1 Single Phase AC Voltage Controller Bridge Converter PEC14M14HW Using SCR and TRIAC e o PEC14M14AC z Line synchronized IC based linear firing circuit for TRIAC amp SCR Line synchronization achieved by 230 9V step down transformer Firing pulse to trigger TRIAC amp SCR 1 1 Pulse transformer used for TRIAC amp SCR gate pulse isolation One No potentiometer used to vary the firing angle 180 0 Provision to control the firing angle through external 0 5V optional Carrier logic circuit implemented carrier frequency 4KHz Debounce logic circuit implemented for gate pulse ON OFF One No toggle switch for gate pulse ON OFF One No TRIAC amp two SCR S with snubber amp fuse for AC regulator power circuit 24V AC lamp with ON OFF switch for power circuit input One o fixed R and L used as load for power circuit
24. socket is provided to interface with inductive speed sensor to read the speed Protections X The protection circuit monitors 1 AC output current nu DC link voltage 11 DC link current and takes appropriate protection like Over Voltage Under Voltage and Over Load One LED to indicate the Shut Down condition due to protection One Reset switch is provided to restart the operation One Control amp Power circuit in DC rail for Breaking over voltage Input Circuitry x b Digital PI Controller for operation One Potentiometer provided to vary the AC Output voltage One potentiometer provided to vary the frequency of the output voltage Range 10Hz 100Hz One SPDT switch provided to release gate pulses 5 Test points are provided for 1 Carrier frequency 1 PWM 1 and PWM 2 pulses 11 DC link current iv load current One Rocker switch provided to power the equipment Closed loop Intel 8051 Microcontroller based CPU card 2 Row x 16 Column LCD Dot Matrix with back light Display Alphanumeric Display Single Channel Single ended Analog Input Range 0 5 V DC Single Channel Analog Output 0 5 Volt One I V Converter and V I converter provided 4 Number of keys provided to give setpoint increment Decrement function etc In Built IC regulated power supply Provision to change any one of the following 53 C X X X F X d Input 0 5 V Output 0 5 V lhp Single phase AC Motor setup
25. transformer provided for firing circuit Carrier logic implemented for pulse with on off switch Pulse transformer used for gate pulse isolation All pulses are terminated in the PCB for scr patching Four No TYN 612 scr with heatsink provided for power circuit Necessary test points provided for waveform measurement 24V AC 2amp provided for power circuit input with on off switch 3 Three Phase Fully Controlled Converter VPET 215 a it dit ie Consists of SCR power circuit Firing circuit 6 Nos of SCR TYN612 with heat sink amp snubber circuit TCA785 based 3 phase firing pulse generator One Pot used to vary firing angle 180 0 6 Nos 1 1 pulse transformer used to isolate the gate pulses Gate carrier logic input provided One no SPDT used for PWM ON OFF Low voltage step down transformer for power circuit input Input 230 230 230V Output 24 24 24V 3A Fixed R L Load 4 Three Phase Half Controlled Converter x VPET 218 Consists of SCR power circuit Firing circuit 3 Nos of SCR TYN612 with heat sink amp snubber circuit 3 Nos of Power diode 64 TCA785 based 3 phase firing pulse generator One Pot used to vary firing angle 180 0 3 Nos 1 1 pulse transformer used to isolate the gate pulses Gate carrier logic input provided One no SPDT used for PWM ON OFF Low voltage step down transformer for power circuit input Input 230 23
26. 0 230V Output 24 24 24V 3A Fixed R L Load RAMP amp PEDESTAL Trigger Circuit for AC Load VPET 203 Consists of BTA12 triac based ac regulator for lamp intensity control TCA785 ic based firing pulse generation to trigger triac One number of potentiometer used ac variable R One number of potentiometer provided for firing angle adjustment O 180d Pulse transformer provided for gate pulse isolation 230v on off pulse output terminated in the pcb with on off switch Necessary test points provided for firing circuit waveform measurement 230v ac input for power circuit with on off switch fuse protection One number of 230v lamp provided for load One number 230 9v step down transformer provided for output waveform measurement in CRO 6 Three Phase AC Voltage Regulator Trainer VPET 215B Consists of SCR power circuit Firing circuit 6 Nos of SCR TYN612 with heat sink amp snubber circuit TCA785 based 3 phase firing pulse generator One Pot used to vary firing angle 180 0 6 Nos 1 1 pulse transformer used to isolate the gate pulses Gate carrier logic input provided One no SPDT used for PWM ON OFF Low voltage step down transformer for power circuit input Input 230 230 230V Output 24 24 24V 3A Fixed R L Load Experiment Testing of 3 phase AC Voltage regulator using R RL Load 7 DC Chopper Trainer VPET 208 x Consists of single quadrant chopper c
27. 046 VCO Based square wave generation with adjustable frequency 50 to 100H2 Square wave modified into short pulses by control ICs Two nos of 1 1 Pulse transformer provided for pulse Isolation Pulses imposed with high frequency square 4KHz for SCR self start 7 Nos of test points provided for signal test measure purpose b Power Circuit It consists of two nos of SCRs rating at 600V 12A with heat sink is provided Two nos of power diode provided One no of output transformer is provided Input 24V with 5 tappings Output 230V 24V One no of Iron core Inductor is provided 100mH 1 Amp One no fuse is provided for over load protection One no AC Capacitor provided for SCR commutation c 24V DC Source Tt consists of LM723 based voltage regulator provided for DC input to SCR power circuit Rating 24V DC 2 Amps It consists of 3 separate sections which is as One no of toggle switch provided for follows DC ON OFF One LED Indication a Parallel Inverter firing circuit Current fold back facility provided for b SCR power circuit output Over current Short circuit c 24V DC Source Documentation Support One no of technical User manual with circuit diagram 20 Suggested Experiments 1 Study of Parallel inverter firing circuit Study of SCR parallel inverter with different frequency 3 Calculation of SCR turn ON OFF time of SCR parallel inverter Protecti
28. 0M1 Four No TYN1225 SCR based fully controlled converter for ve group converter Four no TYN1225 SCR based fully controlled converter for ve group converter All SCR gate pulses and necessary terminals are brought out for external connection One no 120mH center tapped inductor used for IGR Thyristor DC Chopper PEC14HV7 Consists of SCR power circuit and firing circuit IC Based firing pulse generation to trigger auxiliary and main SCR Pulse transformer provided for gate pulse isolation One potentiometer used to vary the duty cycle ratio of PWM 10 90 Two no toggle switch with debounce logic for ON OFF gate pulse Power circuit consists of two no s TYN1225 SCR diode forms auxiliary SCR commutation circuit Fixed L C provided for power circuit commutation One no diode bridge converter with filter capacitor convert input 230V AC to DC for power circuit input MCB Provided for input AC ON OFF over current protection One no diode converter provided for field circuit DC motor control experiment optional 230V 50Hz Input Built in 15 15V DC for control circuit Provision to control the duty cycle ratio from external source voltage 0 SV Power ON OFF switch necessary test points for firing circuits Suggested Experiments l High voltage auxiliary SCR commutated chopper with R RL load 2 Speed control of DC shunt motor using SCR chopper 29 8 Speed Co
29. 2 c Motor Load 12V 24V PEC LVACC3 HIGH VOLTAGE ACCESSORIES a Loading Rheostat Single Phase Three Phase PEC HVACC1 b Inductive Load PEC HVACC72 c Motor Load PEC HVACC3 yj 67 67 68 68 69 69 69 70 70 71 POWER ELECTRONICS TRAINERS PART I SCR RELATED PRODUCTS SCR CHARACTERISTICS TRAINER IGBT MOSFET SCR TRIAC DIAC Characteristics Study Trainer PECI6M1 A Basic static characteristics study trainer LM723 based variable DC power supply 0 30V for SCR Vay LM723 based variable DC power supply O 12V for gate voltage of all devices Separate section for SCR TRIAC characteristics Separate section for IGBT MOSFET characteristics Two No s fixed load resistor for all devices Four No s potentiometer to vary all voltages LED indication for all power supply Three No s digital multimeter for measurement of device parameters 230V AC input with Power ON OFF switch Suggested Experiments l 3 Study of VI characteristics of SCR Study of VI characteristics of TRIAC Study of Transfer characteristics of MOSFET Study of Transfer characteristics of IGBT 2 SCR VI Characteristics Study Trainer PEC16M1B Basic VI characteristics study trainer Consists of one no TYN612 SCR with heat sink LM723 based 20V DC power supply for gate voltage One no potentiometer used to vary the gate current 0 30V DC variable power supply for anode cathode v
30. 30V 50Hz AC input fuse provided for over load protection One no rocker switch with LED indication for power ON OFF By external interface with device module PECI4M15 and inductive load PEC13ACC1 step down cyclo converter experiment can be performed Cosine Firing Circuit for SCR Converter PEC14M18 LE NS CC RT eo MNE tne t s Ma Sn 2 3 f p Hamme mi ie FR i gt E DE i Line synchronized IC based cosine wave crossing firing circuit Line synchronization achieved by step down transformer Op amp based integrator circuit for cosine wave generator Four No s gate pulse to trigger four SCR 1 1 1 pulse transformer used for pulse isolation One No potentiometer used to vary the firing angle 180 0 All four pulses terminated on the front panel for external device module PECI14M15 interface Carrier logic circuit implemented for SCR self starting Carrier frequency 4KHz Debounce logic circuit implemented for SCR gate pulse ON OFF One no toggle switch provided for SCR gate pulse ON OFF 230V 50Hz AC input fuse provided for over load protection One No rocker switch with LED indication for power ON OFF Suggested Experiments L Single phase half controlled converter 2 Single phase fully controlled converter 3 Single phase AC regulator 8 Microprocessor Based Single Phase SCR Triggering Circuit Trainer PECI8MP1 x This trainer consists of
31. 3phase inverter a gt 90 SCR 3 phase inverter firing circuit x Six Isolated gate signals for Full Bridge Converter Firing Angle variable from 180 to O through Ramp and pedestal control Gated carrier source at 4 KHz Housed in a Sleek cabinet Test points are provided on the front panel for detailed study of circuit signals by the student 30 Necessary test points are terminated at sockets so that the student can monitor measure study the signals using CRO DVM etc One potentiometer to vary the firing angle One ON OFF switch with indicator provided to circuitry so that the students can monitor all the test points of the power the control control circuitry for correct functioning Slip ring motor with diode bridge rectifier 3 phase 3 hp slip ring induction motor e Make Benn e Volts 400 440V 3 phase 50 Hz e 2 2 KW 3 hp RPM 1440 e 4 5 Amps e Rotor Volts 210 Volt e Rotor Current 6 Amps One no of 3 phase bridge rectifier is provided to convert rotor circuit volt 13 210V to DC One no of L amp R provided for DC filtering Necessary test points provided for easy study Entire control circuit mounted inside a compact box Mimic circuit is drawn in the front panel Many test points are provided along with front panel A Nice text lab manual is provided Power Supply Input 230V 10 3 phase AC 15V DC 0 5A regulated output for the control circuitry 10 D
32. ACCIA 50Q 4A Rheostat 50 Ohm 4amp rating Variable type Single phase AC or DC input Tubular type 220Q 2A Rheostat PEC LV ACC1B 220 Ohm 2amp rating Variable type Single phase Tubular type INDUCTIVE LOAD PEC LV ACC2 INDUCTIVE LOAD PEC LV ACC2A 120Mh 4Amp Rating Single phase inductive load With 0 15 30 45 60 75 90 120mH tapping Iron core type Banana connector provided for all inputs 69 2 INDUCTIVE LOAD PEC LV ACC2B K O w o w sy 150Mh 5Amp Rating Single phase inductive load With 0 50 100 150 mH tapping Iron core type Banana connector provided for all inputs C MOTOR LOAD PEC LV ACC3 1 12V PMDC MOTOR LOAD PEC LV w ae So ae Se ACC3A Volt 12V DC or 24V DC Amp 1 5A DC Torque kgcm Speed 1500 rpm Double side extension Speed sensor with digital speed indicator shaft I HIGH VOLTAGE ACCESSORIES A LOADING RHEOSTAT PEC HV ACC1 1 SINGLE PHASE LOADING RHEOSTAT PEC HV ACCIA gt st Ikw rating Single phase input Different selector switch provided for current selection Fuse provided for input protection Banana connector provided for load input 2 SINGLE PHASE LOADING RHEOSTAT 4 THREE PHASE LOADING RHEOSTAT PEC HV ACCIB PEC HV ACCID 3kw rating Three phase input Single phase input Different selector switch provided for current selection Different selector switch provided for e Hise provided orin
33. DC link bus and used for protection The AC output of IGBT bridges are terminated at banana sockets Two Hall effect current transducer provided in the Two phase output lines and used for protection Test points provided on the Front panel DC lnk Current DC link Voltage 3 Phase output currents Protections The protection circuit monitors 1 DC link voltage 1 DC link current ii 2 Phase output currents and takes appropriate protection like Over Voltage Under Voltage and Over Load One LED to indicate the Shut Down condition due to protection One Reset switch is provided to restart the operation One Control amp Power circuit in DC rail for Breaking over voltage Input Circuitry x One Potentiometer provided to vary the AC Output voltage One potentiometer provided to vary the frequency of the output voltage Range 10Hz 50Hz One SPDT switch provided to release gate pulses 5 Test points are provided for 1 Carrier frequency 1 PWM 1 PWM 2 and PWM 3 pulses 11 DC link current iv load current Optional One Rocker switch provided to power the equipments V F Controller x x Separate circuits provided to V F control One Potentiometer provided to vary the V F Ratio Other Features x One no of push button for DC current braking One potentiometer used to set different of DC braking 10 50 Power Supply X Input 230V 10 50Hz Single phase AC 59 Accessories
34. Digital Display provided to display the speed Double side shot extension with speed indication Mechanical loading arrangement b Manual Detailed Experimental Manual provided to explain To measure the motor parameters Determination of Transfer function 15 Transfer Function of DC Motor Generator Transfer Function Study Trainer PEC14HV1 This trainer is designed to drive the IHP DC motor optional So that varies parameters of DC motor generator can be found experimentally It consist a package of IGBT with 6 no of IGBTS and drive circuit fabricated on a single chip IGBT 4 quadrant chopper is used to control the armature voltage O 100v and single quadrant chopper is used to control field voltage 150 220v One no of LCD 1s provided to display speed Duty cycle of pwm of armature and field Five no of micro mini swtich s provided for selection and control of different process Military standard connectors are provided for armature and field supply voltage of termination Speed sensor interfacing provision is available on the module of operate under closed loop Vdspic4011 Microconroller pwm generation circuit is implemented Separate variac is provided to measure the impedance of the armature amp field windings One no of analog voltmeter is provided to view the DC link voltage The current protection is implemented to the rating of motor supplies Four No s DPM for armature current
35. Digital speed indicator provided to indicate set actual speed of the motor Pulse amplifier and pulse isolation provided 2 Nos of 1 1 pulse transformer used for pulse isolation Necessary test points and SCR input and output connectors are provided for easy studying and patching Power Devices Crcuit X Four nos of SCRs rated for 1200 volts VAK amp 25 Amps 1A One diode for free wheeling Each device is provided with RC Snubber for dv dt protection Necessary terminals are terminated on connectors 24volt AC 2Amp provided for low voltage operation In the low voltage operation the student can see the waveform using an Oscilloscope without any Isolation Transformer One no of fuse provided at output section for over current part One no of SPDT to ON OFF power circuit AC Input One no of Digital speed indicator indicate set actual speed of motor Analog PI Controller X One analog PI Controller provided for closed 15 DC Motor Speed Control Trainer loop operation CLOSED LOOP VPET 214 Load Ramp and Pedestal Trigger circuit 24V PMDC Motor One no of Phase control IC used for pulse Make Panasonic with output feedback generator facility One no of potentiometer used to vary firing the firing angle O 180 68 I A 1 X oe Ie Xo oe ae ae B 1 2 oF Se se N PART IV POWER ELECTRONICS ACCESSORIES LOW VOLTAGE ACCESSORIES RESISTIVE LOAD PEC LV ACCIA PECLV
36. Each sections consists of power device and 0 30V for SCR Vak chal E em load omnia LM 723 based variable DC power supply oe gton amplifier used for O 12V for gate voltage of all devices Gaver CaO Separate section for SCR TRIAC One no fixed 15V 1Amp DC power S characteristics supply for power section input l One no toggle switch used to ON OFF i a for IGBT MOSFET 15V DC with LED indication characteristics 555 IC based square wave generation for Two No s fixed load resistor for all devices device base input Four No s potentiometer to vary all voltages One no toggle switch to select two range of LED indication for all power supply frequency Three No s digital multimeter for For IGBT MOSFET characteristics measurement of device parameters MEER ee au as a 230V AC input with Power ON OFF switch Z All three sections base gate input and collector drain inputs are terminated at banana sockets Suggested Experiments 1 Study of VI characteristics of SCR Suggested Experiments for All Three Devices 2 Study of VI characteristics of TRIAC 3 Study of Transfer characteristics of 1 Measurement of On delay period Tp ON MOSFET 2 Measurement Rising period Tp 4 Study of Transfer characteristics of IGBT 3 Measurement of Turn On period T ON 5 Study of Dynamic characteristics of 4 Measurement of Conduction period T MOSFET A i eid a Ae 6 Study of Dynamic charac
37. Hz variable frequency Current 7 5Amp of Three Phase This trainer is designed to drive the three phase AC induction motor using SCR based V F controller open closed loop SCR based three phase converter and inverter forms V F controller Variable voltage achieved by controlling the firmg angle of SCR converter Variable frequency achieved by controlling the firing pulse frequency of SCR Mc Murray inverter SCR Converter and Firing Circuit x Op amp Based linear firing circuit gives 0 180 d firing angle variation One no potentiometer used to vary the firing angle adjustment All six pulses isolated by pulse transformer and terminated in the front panel Six No s TYN1225 SCR forms single phase fully controlled converter with LC filter gives 600V DC to SCR inverter MCB and fuse DC side provided for over current protection DC voltmeter provided for DC ral voltage measurement SCR Mc Murray Inverter and Firing Circuit x IC Based three phase firing circuit with variable frequency 10 50 H2 0 5V DC adjust the firing angle frequency Six No s Firing pulse with pulse transformer isolation terminated in the front panel Six No s TYN612 SCR and six No s diode forms power circuit six No s capacitor and three No s center tapped inductor for commutation Separate control circuits for adjusting V F ratio Provision to control the V F ratio in external 0 50V DC closed
38. Innovation in Educational Trainers POWER ELECTRONICS TRAINERS alan sya eee a ae oe I a CE PIot No 5m ics Estate Perungudi Chennai 600 096 Rh 9154 42 2496 1852 Fax 91 44 2496 1536 Maill sales vimicrosystems com Web www vimicrosystems com POWER ELECTRONICS PRODUCTS LIST PART I SCR RELATED PRODUCTS I SCR CHARACTERISTICS TRAINER eS a IGBT MOSFET SCR TRIAC DIAC Characteristics Study Trainer PECI6M1 A SCR VI Characteristics Study Trainer PEC16M1B TRIAC VI Characteristics Study Trainer PECI6M1C DIAC VI Characteristics Study Trainer PEC16M1D Transient Characteristics of SCR and MOSFET VPET 216 Dynamic Characteristics of SCR amp TRIAC VPET 216A Construction of SCR Using Two Transistor PECI6M1F Il SCR TRIGGERING CIRCUITS TRAINERS A TYPES OF TRIGGERING MODULES a Aa o 10 R R C UJT Firing Module PEC14M12 555 Firing Module PEC14M13 Line Synchronised Triggering Module Single phase Fully Controlled Bridge Convert PEC14M14FW Single Phase Bridge Firing Circuit with PI PECI4M14 PI Chopper Firing Module PEC14M16 Cyclo Convertor Firing Module PEC14M17 Cosine Firing Circuit for SCR Converter PEC14M18 Microprocessor Based Single Phase SCR Triggering Circuits Trainer PEC18MP1 Microprocessor Based Three Phase SCR Triggering Circuits Trainer PEC18MP72 SCR Triggering Circuit Trainer PECI4M12E B TYPES OF POWER MODULES
39. N TRAINERS 1 MOSFET MODULE VPET 106M It consist of one number of diode metal package with heatsink is provided MOSFET IRF840 with rating of SOOV amp SA Drain amp source terminals are terminated at banana sockets RC snubber circuit is provided along with fuse for other circuit protection 2 IGBT MODULE VPET 106I X It consist of one number of diode metal package with heatsink is provided IGBT CT60AM with rating 600r 60A The gate collector amp Emitter terminals of are brought out amp terminated at banana connectors RC snubber circuit is provided along with fuse for other circuit protection 3 SINGLE PHASE MOSFET MODULE PEC16M2 Four no IRF840 MOSFET with heatsink and snubber circuit 6N137 High speed opto for gate PWM isolation IR2112 2110 Driver IC for gate PWM drive IC Based dead time logic circuit implemented to avoid pulse shoot through Built in 50 30V DC 2Amp for power circuit input Over current protection circuit implemented with LED indication All devices terminated individually for different configuration By suitable interface with external firing module PECI6M4 M5 optional it can be work as Single quadrant chopper Two quadrant chopper Four quadrant chopper unipolar Four quadrant chopper bipolar Single phase SPWM inverter Single phase single pulse inverter ogee ee a All four device gate pulse inputs are terminated on the front panel for e
40. V DC Single Channel Analog Output 0 5 Volt One I V Converter and V I converter provided 4 Number of keys provided to give set point increment Decrement function etc In Built IC regulated power supply Provision to change any one of the following Input 0 5 V Output 0 5 V AC Servo Motor Position Control Trainer PEC 02 versatile trainer designed for applications Experiments mentioned above It consists of X An AC Servo motor mounted on a open frame Power driver to control speed of the motor To study speed servo control of AC servo motor One Optical sensor provided for speed sensor and display on a 3 2 digit display This trainer system is a compact amp advanced version for class room experiment set up for the students to operate and study a practical speed measurement using AC Servo motor Features x One 230V 11 5 Control Voltage Two phase AC servo motor mounted on a open frame Speed Range 0 to 1500 RPM geared down in 1 30 ratio One Optical sensor coupled to shaft to measure speed AC Servo Motor s speed is controlled by varying control voltage 11 5V Direction of the motor is varied by phase reversal of the control voltage Mechanical loading arrangement provided Power Supply Input 230V 10 50Hz Single phase AC 15V at 0 5A DC regulated output for control circuitry Suggested Experiments l fi Speed measurement of AC servo motor using op
41. ZCD generator circuit Carrier logic implemented for SCR self starting One no Toggle switch with debounce logic for pulse ON OFF Pulse output terminated in the front panel for device module interface Speed sensor interface provision for motor control operation b SCR Power Circuit X Power circuit consists of two no SCR SKKT92B16E rating at 1200V 90AMP two No s power diode rating at 1200V SOAMP All terminals of diode and SCRs terminated on the front panel for external connection One no MCB provided for mains Fuse provided in input side 1 1 pulse transformers and amplifiers used for gate pulse isolation and amplifications Test points to view the signals at each levels c Suggested Experiments ie 2 Single phase half and fully controlled converter with R and RL load Single phase AC regulator with R and RL load 2 Three Phase Half amp Fully 1 1 pulse transformers and amplifiers Controlled Bridge Converter used for gate pulse isolation and PECI4HVS amplifications X Specially designed for high voltage operation It consists of three phase firing module SCR three phase power circuit and high voltage accessories optional a Firing Module X Micro controller based based three phase linear triggering circuit Touch keys used to vary the triggering angle 0 180 Line synchronization achieved but three phase step down transformer and ZCD generator circuit Car
42. c Series Motor Controller Using Jones Chopper PEC14M21A This setup designed for open loop amp closed loop speed control of DC Series motor using SCR Jones chopper circuit It consists of a SCR Jones chopper firing and power circuit b DC Motor setup G d Digital PI Controller Isolation transformer a SCR Jones chopper firing and power circuit Two nos SCR with RC snapper provision Two nos Diodes and one fixed load resistor One center tapped 0 50 100 inductor 120mH for power circuit with one commutating capacitor Two isolated firing pulses to fire SCR Two nos Toggle switches to switch ON Auxiliary SCR pulse and main SCR pulse One 300V Fixed DC Supply for power circuit and one toggle switch to ON OFF DC supply All input and outputs of Power circuit components SCR DIODE LOAD are terminated in a PCB for student patching Necessary test points for study of firing circuit One Potentiometer for Duty cycle variation 31 b DC Series Motor oO A w o F Ihp Armature voltage 220vdc 5amp Speed 1500rpm Double side shaft extension Speed sensor with speed display and speed feed back 0 5vdc facility Mechanical spring balance load set up c Digital PID controller for closed operation 11 This Intel 8051 Microcontroller based CPU card 2 Row x 16 Column LCD Dot Matrix with back light Display Alphanumeric Display single Channel Single ended Analog Input Range 0 5
43. cator 17 1 HP AC MOTOR GENERATOR LOAD SET UP PEC HV ACC3B This set up consists of one number of 1 AC motor coupled with 2 1 HP dc shunt generator act as load AC Motor Spec Power 1HP Single phase permanent capacitor type 230V AC 50Hz input Speed 1400 rpm Speed sensor with speed indicator DC Generator Spec Power HP 1 8kw shunt type Armature voltage 180VDC 7amp Field voltage 220VDC 0 8amp Speed 1500 rpm Double side shaft extension Make benn Both motor and generator are coupled with base plate 18 1 HP AC MOTOR EDDY CURRENT LOAD SET UP PEC HV ACC3C This set up consists of one number of 1 AC shunt motor coupled with 2 Eddy current load set up AC Motor Spec Power 1HP Single phase permanent 230VAC 50Hz input Speed 1400 rpm capacitor type Eddy current load set up 1 HP rating 0 80v 3amp current rating 1500 rpm speed Electronic DC voltage controller provided for torque variation Torque sensor with torque indicator Speed sensor with speed indicator Both motor and eddy set up coupled with base plate 76 19 1 HP THREE PHASE MOTOR LOAD SET UP PEC HV ACC3M This set up consists of one number of 1 three phase ac motor coupled with 2 mechanical spring balance load set up with 3 digital speed indicator AC Motor Spec Three phase squirrel cage induction motor Power JHP 75kw Current 1 8amp star connection three phase 415VAC 50Hz input Speed 1390 rpm Make Sieme
44. converter 2 Single phase fully controlled converter 3 Single phase AC regulator 4 Single Phase Bridge Firing Circuit with PI PEC14M14 PI Line synchronized IC based linear firing circuit for SCR applications Line synchronization achieved by 230 9V step down transformer Four No s firing pulses to trigger four SCRs 1 1 1 Pulse transformer used for gate pulse isolation One no potentiometer used to vary the firing angle 180 0 All four pulses terminated on the front panel for external SCR device module interface Carrier logic circuit implemented for SCR self start carrier frequency 4KHz Debounce logic circuit implemented for SCR gate pulse ON OFF One No toggle switch for gate pulse ON OFF 230V 50Hz AC input fuse provided for over load protection One No ON OFF switch with LED indication for power ON OFF Provision to control the firing angle through external 0 to 5V DC One No op amp based analog PI 1 Auxiliary SCR commutated chopper control circuit for closed loop 2 Complementary SCR commutated operation chopper Provision to connect feed back signals Jones chopper to PI control circuit Current commutated chopper 5 Speed control of PMDC motor motor optional Suggested Experiments ae Suggested Experiments 1 Single phase half controlled converter 2 Single phase fully controlled converter 6 Cyclo Converter Firing Module PEC14M17 5 Chopper Firing Mo
45. cuit Two no of potentiometer are provided one to vary the duty cycle of armature circuit and another duty cycle of field circuit 50 Pulse ON OFF switch is provided to enable or disable the pulse at the pulse output connector One no of toggle switch is provided to select either four quadrant chopper mode or speed control mode One no of toggle switch is provided to select either open loop or closed loop operation One no of push to ON switch is provided to Reset the module Four no of push to ON switch is provided to select either forward running or Breaking or Reverse running or Breaking One no of ON OFF section is provided to power ON OFF total module Testing point terminals are provided for armature pwm and field pwm signals One no of LCD is provided to view the duty cycle of armature and field pwm signal and speed of motor One no of D socket is provided to interface with inductive speed sensor to read the speed Specification Input voltage 230V AC 50Hz Output voltage Oto 180V DC Output rating SAmp k Separate opto driver circuit provided for single quadrant chopper Motor R amp L load can be as_ load optional current Three Phase Input Igbt Based Four Quadrant Chopper PEC16HV7 Four no IGBT IPM forms H bridge four quadrant unipolar chopper circuit Separate firing circuit for unipolar PWM generation PWM frequency 5KHz One potentiometer used to vary
46. d for firing angle variation Output terminated by connectors Necessary test points provided b Basic DC Triggering circuit X Variable DC power supply with protection One potentiometer used to vary the DC voltage as well as the firing angle Necessary test points provided c UJT Triggering Circuit X X One no of 2N2646 UJT used for firing pulse generation Variable R amp C provided for triggering circuits Potentiometer provided for firing angle variation Pulse transformer provided for pulse isolation 4 Nos of triggering pulses terminated by suitable connectors Necessary test points d Microcontroller based Firing circuit X e dsPIC30F4011 based firing pulse generation One no of pulse output with firing angle variation 0 180 One no of digital key provided for firing angle variation SCR Module One no of SCR with snubber and heat sink provided Fixed R Load 24V 1A AC Source provided for power circuit input B TYPES OF POWER MODULE 1 SCR TRIAC DIAC Device Module PEC14M15 It is a common device module by interface with external firing module it can be used for different applications Four No s TYN1225 SCR with fuse protection A K G terminals of all SCR terminated individually for external connection Four No s diode with fuse protection A K of all diode terminals terminated individually for external connection One no BTA12 TRIAC with fuse protection MT1
47. ded Analog Input Range 0 5 V DC Single Channel Analog Output 0 5 Volt One I V Converter and V I converter provided 21 4 Number of keys provided to give set point increment Decrement function etc In Built IC regulated power supply Provision to change any one of the following Input 0 5 V Output 0 5 V d Motor set up 2 o 3 Ba Se cA hp DC shunt Motor Armature voltage 440vdc 2amp Field voltage 220vdc Samp Speed 1500rpm Double side shaft extension Speed sensor with speed display and speed feed back O S5vdc facility Mechanical spring balance load set up 5 Closed Loop Speed Control of PMDC Motor using SCR Converter PEC 03A Features X 180V Permanent Magnetic DC motor is provided Line commutated SCR converter to feed the armature Voltage of the DC motor Phase angle firing A Potentiometer is provided for setting the speed Sensor for speed sensing provided A Digital Indicator with 3 digit LED display for standalone operation Open Loop to indicate the speed of the DC motor Can Operate in 1 Stand alone mode Only open loop 11 Microprocessor controlled ii IBM PC Computer controlled SPECIFICATIONS Converter Single Phase Firing Bridge Circuit Four Isolated gate signals for Full Bridge converter Firing Angle vary from 180 to 0 through Ramp and pedestal control Gated carrier source at 4 KHz SCR Circuit Four thyristors are provided Snubb
48. dule PEC14M16 Consists of two no firing pulse to trigger auxiliary main SCR Two No s 1 1 pulse transformer used for gate pulse isolation One No s potentiometer used to vary the duty cycle ratio of PWM signal 10 90 Debounce logic circuit implemented for pulse ON OFF Two No s toggle switch for ON OFF auxiliary main SCR pulses Necessary test points for triggering circuit study Auxiliary and main SCR pulses are terminated on the front panel to interface with SCR device module PECI4M15 amp LC module 230V AC 50Hz AC input 15 15V DC for control circuit Illuminated rocker switch with fuse protection for mains ON OFF Line synchronized IC based firing circuit for phase control Line synchronization achieved by step down 12 0O 12V transformer Provision to vary frequency amp phase angle of SCR triggering pulses One no potentiometer used to vary the firing angle 180 0 Programmable IC for firing circuit frequency variation Two No s toggle switch to select frequency 50Hz 50 2Hz 50 3Hz 50 4Hz Four No s gate pulse to trigger four SCR 1 1 1 pulse transformer used for gate pulse isolation All four pulses terminated on the front panel for external device module PECI14M15 interface Carrier logic circuit implemented carrier frequency 4KHz Debounce logic circuit implemented for SCR gate pulse ON OFF One no toggle switch for SCR gate pulse ON OFF 2
49. e Additional Features 1200V 25A converter Bridge for AC DC power conversion 1 No of Hall Effect current sensors to sense the output current of the Inverter Bridge All the PWM signals are isolated using Opto Isolator Protection circuit for over current with LED indication Independent Power supplies for all Isolated circuits Voltmeter to Indicate the DC Link Voltage All current PWMS amp Feedbacks are terminated at Front panel FRC Connectors are provided to Interface with the External digital controllers All the Input Output Lines are Terminated at Banana sockets 0 5hp 3 AC Induction Motor 30 200V 1415 RPM IGBT IC drivers are used to drive switches Output 0 to 220Volt AC 5 Amp One MCB provided to switch on the AC input to the power circuit One DC Voltmeter provided to measure the DC link voltage One hall effect current transducer provided in the DC link bus and used for protection The AC output of IGBT bridge is terminated at banana sockets One Hall effect current transducer provided in the AC output line and used for protection Test points provided on the Front panel IV IGBT MOSFET BASED AC DC DRIVES DC link Current DC link Voltage AC output current 1 Speed Control of Single Phase Induction Motor Using IGBT Inverter V F CONTROL PEC16HV1 CONTROL MODULE PEC16HV2B Vdspic4011 based pwm generator for four 1 V F Control of Single phase Induction Motor quadrant chopper ci
50. ead time Separate cycle for battery level monitoring with low high volt LED indication Provision to select online offline UPS More than 10 no toggle switch for fault analysis Specifications Capacity 500V A Input volage 24V DC Output voltage 150 230V AC variable voltage 45 55Hz variable frequency Output rating 2 5A 5 DSP Based 500VA UPS Trainer PEC16HV DSUPS This trainer is designed to study the working principle of solar panel powered or SCR Mains converter powered DSP Based UPS system This trainer consists of a IGBT Based Single phase SPWM inverter b TMS320F2407A DSP based PWM Controller a IGBT MOSFET Based Single SPWM Inverter Battery 24V 48V d Solar panel based Battery Charger SCR Based Battery Charger phase 4 Nos of IGBT MOSFET with suitable heat sink and snubber circuit forms H Bridge inverter One no of Inverter transformer used for IGBT output for step up the voltage and Isolation One no of LC Filter used to Filter the inverter output voltage One no of Voltage sensing transformer and current sensing transformer for feedback voltage for closed loop and protection One no of filter capacitor for DC input b TMS320F2407A DSP Based PWM x ve He X Controller Digital signal processor TMS320F2407 used to generator 1d SPWM Pulses to trigger IGBT amp to generate single phase converter gate pulse for battery charger 4 Nos of PWM outp
51. ect output frequency 50Hz 50 2 50 3 50 4Hz etc Pulse transformer provided for gate pulse isolation 12 DC Motor All four pulses terminated in connector for SCR patching Four number of TYN612 scr with heat sink and center tapped inductor provided for power circuit 24 0 24V AC 2amp provided for power circuit input One number of fixed resistor provided for load One number of toggle switch provided for AC on off Necessary test points provided for waveform measurement 230V AC input 15 15VDC for control circuit Trainer Speed Control VPET 211 One no of Phase control IC used for pulse generator One no of potentiometer used to vary firing the firing angle 0 180 Pulse amplifier and pulse isolation provided 2 Nos of 1 1 pulse transformer used for pulse isolation Necessary test points and SCR input and output connectors are provided for easy studying and patching Power circuit It consists of SCR power circuit for DC Motor Armature Diode rectifier for FIELD circuit 67 Armature Circuit x 4 Nos of SCR with heat sink form fully controlled converter 230V AC input One no of SPDT to ON OFF power circuit input voltage One no of fuse provided for output section All G K terminals brought out by special connectors Connector output terminated by banana socket for Motor Armature Field Circuit X One no 1 diode bridge rectifier Package provided 230V AC Input for diode
52. ed chopper power circuit IC based PWM Generator One no of Potentiometer used to vary duty cycle of PWM signal 10 75 Necessary test points provided to study the control circuit One no of IRF 840 MOSFET used as a power switch SV 10V DC unregulated power supply for power circuit One ON OFF switch provided for power circuit input voltage By adjusting duty cycle output voltage can be varied One no of analog DC voltmeter Output Voltage lt mput Boost mode Output Voltage gt Input Buck Mode All are mounted on a wooden box Input 230V 115V DC for power circuit 7 MOSFET Based Forward Converter VSMPS 08A One number of powers MOSFET IRF840 used as power switch with suitable heat sink TL494 IC based PWM generator One number of high speed Opto isolator provided for PWM Isolation Driver IC IR2110 used to drive power switch High frequency transformer provided for isolation Power circuit I P voltage 15V DC Output voltage 0 5 VDC 1 amp 230V AC input 15 DC for control circuit One number of fuse provided for protection Voltage feed back from the output for closed loop operation 62 8 MOSFET Based Fly Back Converter VSMPS 09A One number of powers MOSFET IRF840 used as power switch with Suitable heat sink TL494 IC based PWM generator One number of high speed Opto isolator provided for PWM isolation Driver IC IR2110 used to drive power switch High frequency transformer p
53. er circuit is provided to each device All gate signals are feed through polarized connectors Thyristor power pack used to provide variable field voltage of DC Motor Other Features One F V converter provided to convert the pulses of the speed sensor to voltage One 3 digit display provided to display the actual and reference speed Opto coupler is provided for coupling Pulse transformer provided for coupling Pulse transformer provided to isolate low power and high power sides of the circuitry Applications Study of Thyristor control of DC Motor Measure the speed of DC motor Display the speed of DC Motor Establish an open loop control Study of DC variable Speed Drive 7 ae ae OP 28 6 Speed Control of DC Shunt Motor Using SCR Dual PECI4HV6A Converter JE Hs fed m oe aa le j a TIITII oer rt Consists of dual converter firing circuit and SCR power circuit Firing Circuit PEC20M2 Two sets of op amp based linear firing circuits for ve amp ve group SCRs 8 No s of triggering pulse with 1 1 pulse transformer isolation One No SPDT with debounce logic for all pulse ON OFF One no toggle switch to select circulating non circulating current mode operation Two No potentiometer used for firing angle adjustment in two modes Necessary test points for control circuits Circuit Dual Converter Power PEC2
54. erters All G K terminals are terminated in front panel for waveform study 15 pin shielded cable for pulse input from the controller to power circuit Two Nos of step down transformer for power circuit input AC voltage One Center tapped inductor 0 50 100 for power circuit with circulating current mode Optional All components are housed in a fine cabinet Provision for Speed sensor sensing arrangement for motor application Two Nos of MCB provided with fuse to isolate the input AC supply c Suggested Experiments X 4 Three PEC20M3 amp 20M4 Study of Single phase dual converter with and without circulating current mode Phase Dual Converter a Firing Module X X X 12 Nos pulse for P Group and N Group SCR Converter Touch keeps to select and vary the firing angle 1 No of Pulse ON OFF switch and power ON OFF switch is provided 19 Necessary test point provided for waveform study Feedback connector provision for motor load LCD Display is provided b Power Circuit X 6 Nos of SCR provided for snubber protection is provided for P Group and N Group Converters All G and K Terminals are terminated in front panel for waveform study 15 pin shielded cable for pulse input from the controller to power circuit Two nos of three phase step down transformers is provided for power circuit input One No of center tapped inductor for 1GR purp
55. ervo motor setup u Variable AC voltage source il x 100W Two Phase AC servo motor setup Main winding voltage 230V AC Control winding voltage 0 230V AC 90 phase shift Optical speed for measurement Belt type arrangement Speed 0 1500 RPM Power 1OOW sensor speed mechanical loading Variable AC voltage source One number of 1 1 Amp Auto transformer provided to vary 0 230V AC for control unit One number of Phase shift transformer provided for 90 Phase shifting of main wing voltage 33 Fuse provided for CW over current protection Illuminated power ON OFF switch provided for CW amp MW voltage input One No of digital ammeter provided for control winding current measurement One No of Digital voltmeter provided for control winding voltage measurement One No of MC Based digital speed indicator for motor speed measurement 3 Input all are mounted on a nice cabinet One no of Experimental manual Suggested Experiments L 2 14 Measurement of motor transfer function Speed control of AC servo motor Transfer Function of Dc Servo Motor VPET 300A This setup consists of 100W DC Separately excited DC servo Motor setup Variable AC DC source with meter setup a 100W Separately Excited DC Servo Motor Armature Voltage 0 48V DC 2 7 Amp Field Voltage 0 48V DC Shunt type separately excited Speed 1500 rpm Rating 100W One Inductive proximity
56. et up consists of Features x One number of MOSFET with proper heat sink is provided One number of BJT with proper heat sink is provided One number of IGBT with proper heat sink is provided One no of Square wave pulse generator circuit is provided for power devices Gate circuit One number of variable DC voltag circuit is provided for power device input One no of potentiometer is provided for DC voltage adjustments One number of Fixed R Load is provided for MOSFET circuit One number of Fixed R Load is provided for BJT circuit One number of Fixed R Load is provided for IGBT circuit Current sensing resistor is provided for all devices collector current measurement All necessary block outputs are terminated by 4m connectors by external patching All are mounted on wood box with diagram printed PCB 230V AC input with power ON OFF switch 6 Characteristics of MOSFET amp IGBT VPET 202A Consists of one IGBT and one MOSFET power device One no of step down transformer diode bridge rectifier and Filter capacitor and 7812 regulator forms 12V DC 30V DC supply for device voltage variation One no of potentiometer to vary the gate current One no of potentiometer to vary the collector current Fixed load resistor Power ON OFF switch provided All necessary points terminated in the front panel Provision for connecting ammeter and voltmeter 44 II IGBT MOSFET BASED LOW VOLTAGE APPLICATIO
57. ge One no fuse provided for power supply protection necessary test points provided Suggested Experiments l 2 Testing of series inverter with R load Study of series inverter firing circuit with frequency variation 9 SCR Parallel Inverter PEC14M7 Consists of SCR power circuit and firing circuit 4046 IC Based square wave generation with adjustable frequency One no potentiometer used to vary the frequency 50 100Hz 1 1 Pulse transformer used for gate pulse isolation Pulse output terminated in the PCB for user patching Power circuit consists of two No s SCR TNY612 inverter transformer with flay back winding One no ron core inductor provided for power circuit One no AC capacitor for SCR commutation LM 723 Based 24V 2A DC power supply with LED indication One no toggle switch used to ON OFF 24V DC power supply 15 Over load and short circuit protection provided for DC power supply 230V 50Hz AC input 15V DC 1 AMP for control circuit One no fuse provided for power supply protection necessary test points provided Suggested Experiments L Study of parallel inverter firing circuit 2 Testing of parallel inverter with R load 10 with frequency variation Morgans Chopper Circuit Trainer PEC14M20 This trainer is designed to implement and demonstrate Morgan chopper circuit It can be used for speed control of PMDC motor using Morgan chopper Sin
58. gle SCR with snubber circuit and one diode is provided Capacitor and inductor is provided for commutation 24V DC 3 Amp Power supply is provided for chopper input 15V 1Amp for internal control circuit Isolation is provided for gate pulse 11 Jones Chopper Trainer Module PEC14M21 X Built in 24V AC 1AMP for UJT firing circuit input Two nos SCR with RC provision Two nos Diodes and one fixed load resistor One center tapped 0 50 100 inductor 120mh for power circuit with one commutating capacitor Two isolated firing pulses to fire SCR Two nos Toggle switches to switch ON Auxiliary SCR pulse and main SCR pulse One 24V 1A Fixed DC Supply for power circuit and one toggle switch to ON OFF DC supply All input and outputs of Power circuit components SCR DIODE LOAD are terminated in a PCB for student patching Necessary test points for study of firing circuit One Potentiometer for Duty cycle variation supper 12 UJT Firing Circuit for SCR Converter PEC14M12B Consists of UJT firing circuit and SCR power circuit and load Line synchronized UJT firing circuit Line synchronization achieved by 230 9V step down transformer 16 One no potentiometer used to vary the firing angle 180 0 Two No 1 1 pulse transformer provided for gate pulse isolation All four gate pulses are terminated in the PCB with suitable connector Four No TYN612 SCR with snubber circui
59. h to ON OFF 24V AC One no Potentiometer used to vary the firing angle 10 170 degree 1 1 1 Pulse transformer used for gate pulse isolation Pulse outputs are terminated in the PCB for external connection Two No s TYN612 SCR connected in antiparallel forms SCR AC regulator with termination DIAC Firing Circuit with Triac Ac Regulator x One no Potentiometer and different values of capacitor and one no DIAC forms DIAC firing circuit Two No s Toggle switch to select different value of capacitor One no BTAI2 TRIAC used as a AC regulator with termination One no 100W lamp used as a load Suggested Experiments I 2 SCR AC regulator using UJT firing circuit TRIAC AC regulator using DIAC firing circuit 7 SCRDC Circuit Breaker VPET 100 SCR Based Complementary commutated chopper used as a DC circuit breaker Two No s TYN612 SCR with heartsick used for main and auxiliary SCR One no AC capacitor used for commutation One no fixed resistor used as load for auxiliary SCR circuit One no current sensing resistor provided in main SCR for load current sensing Three No s SPDT provided for load current variation One no push to on switch to on the main SCR One no push to on switch to auxiliary SCR to off main SCR 41 8 Zero SCR TRIAC PEC14M19 Two No s LED to indicate the two SCR on status One no DC ammeter 0 3Amp for load current indication One n
60. hp 1500 rpm Resistive load of 4 KW provided Both Slip Ring Induction motor and DC Generator are coupled together One optical encoder is provided for the speed measurement The output of optical encoder is signal conditioned amp calibrated to indicate the speed of the motor amp display on a 3 digit display Converter Inverter unit for slip power recovery scheme with inverter being Microcontroller controller 8051 thyristor PIV 1200V Current 25 Amp having a filter R C in between for filtering ripples of output DC of converter uncontrolled rectifier Converter 6 Diodes 120 volt PIV 25 Amp to form the bridge Fuse provided Inverter 6 Thyristors 1200 Volt PIV 25 amp The SCRs are mounted on suitable heat sinks and Snubber circuit is provided to each device One 3d Transformer provided to feedback the recovered power to the line One Auto Transformer provided controls manually the power feed back to the line Power meters provided at various points to monitor to power consumed A power control panel is provided to fix various Volt meters Current meters and Power meters The panel consists of a Auto Transformer b ON OFF Switch c Volt meter d Current meter e Switches to select various options f One Volt meter One Current meter to show the generator Voltage output and Current output 3 Ammeters to show the 3 phase currents of Inverter output One Ammeter and One V
61. hree Phase PECI4HV11 Cyclo Converter This module is designed for three phase half wave step down cycloconverter 23 X It consists of 18 Synchronized firing pulses 18 SCRs Relevant power supply and circuitry for frequency divisions Main Circuit 18 Nos SCR protection is with RC provided for snubber 3 cycloconverter power circuit each phase consist of 6 SCRs Rated at 1200 V 25 Amps 3 Nos center tapped inductor O 50 100 is provided for power circuit 18 Nos isolated gate pulses for SCR power circuit One potentiometer is provided to vary the frequency One potentiometer is provided to vary the output voltage MCB protection Housed in sleek screen printer cabinet Provision for V F control Power Supply X Input 440V 10 50Hz three phase AC supply 15V DC 9V 9V 9V AC 3 for the firing circuits Output Ranges X Frequency Variation 1 Hz to 1 3 rd of supply frequency Approx 1 Hz to 16Hz Voltage Variation 0 to 90 of supply voltage 13 Three Phase Diode Characteristics Trainer PECI4HV5D It consists of 6 Nos of power diode rating at 1200V 25Amps All diodes A K terminated individually for different terminals are configuration Fuse provided for protection MCB Provision for 3d ON OFF Three phase step down transformer provided for low voltage operation Input 230V 230V 230V 30 Output 24 24 24 3 3Amps 4 Nos of Hall effect c
62. ications for power ON OFF One no of rocker switch with LED indication for power ON OFF Suggested Experiments L Study of 555 firing circuit Single phase half wave controlled converter using 555 firing By external interface with SCR device module PEC14M15 the following experiments can be connected additionally Single phase half controlled converter using 555 firing Single phase fully controlled converter using 555 firing 3 Line Synchronized Triggering Module Single phase fully controlled bridge convert PEC14M14FW A Line synchronized IC based linear firing circuit Line synchronization achieved by step down transformer Four No firing pulses to trigger four SCRs 1 1 1 Pulse transformer used for SCR gate pulse isolation One No potentiometer used to vary the firing angle 180 0 All four pulses terminated on the front panel for external SCR device module PEC14M15 interface Carrier logic implemented for SCR self start carrier frequency 4KHz Debounce logic circuit implemented for gate pulse ON OFF One No toggle switch provided for gate pulse ON OFF 230V 50Hz AC input fuse provided for over load protection One No rocker switch with LED indication for power ON OFF Provision to control the firing angle through external 0 5V DC Provision to control the firing angle through external 4 20mA optional Suggested Experiments Single phase half controlled
63. ing termination externally for students study 3 Sockets are provided to insert externally a SCR One External Transformer provided 230V Input O P 24 0 24V AC 1Amp Housed in a sleek box Applications Study of UJT Relaxation Oscillator 2 Study of ON Delay Timer 3 AC Regulator using SCR 2 Digital Measurement of Phase Angle PEC14M9 39 Measurement of phase different between 2 sine waveform Resistor Capacitor RC circuit to shift one waveform up to 90 to stimulate phase difference One 3 Digit display to display 0 90 phase angle Input signal sources Power Supply Input 230V 10 50Hz single phase AC 15V DC 0 5A regulated output for the trigger circuits 3 AC Solid State Relay Using Opto coupler Isolation PEC14M10 x Ge F X 555 IC used to generate triggering pulse to SCR TRIAC 6N137 opto used to isolate the gate signal SCR based AC regulator triac based AC regulator TYN612 SCR BTA12 TRIAC used as a power device Connector provided SV ISVDC input Lamp used as a load Input 230VAC Output 230V AC SAMP Control signal 5V 15VDC external SCR Ring Counter PEC14M11 Five No s SCR used as a power device Five No s lamp used as a load to view ring counter operation Auto manual mode of operation One no SPDT switch to select manual auto mode of operation 555 IC based as table multivibrator for auto mode operation One no
64. ion circuit input Two no toggle switch for ON OFF Suggested Experiments DC and AC voltage 1 Single phase fully controlled converter with R and R L load Suggested Experiments 1 Load commutation circuit class A 2 Resonant pulse commutation circuit class B 12 3 Complementary commutation circuitry for chopper power circuit input class C voltage 4 Impulse auxiliary commutation circuit One no toggle switch for 24V DC class D ON OFF with LED indication 5 External pulse commutation circuit class E Suggested Experiments 6 Line natural commutation circuit class F 1 Class B SCR commutated chopper 2 Class D SCR commutated chopper 5 SCR BASED DC CHOPPER CIRCUIT PEC14M14CH 1 6 Single Phase Cyclo Converter PECI4M14CY Consists of firing circuit power circuit and load Firing circuit IC Based square wave generation Two No s firing pulse to trigger auxiliary and main SCR One potentiometer used to vary the frequency of the firing pulse 100Hz 300Hz Approx One No s potentiometer used to vary duty cycle ratio 10 90 Two No s toggle switch to ON OFF SCR gate pulses Necessary test points to measure control circuit waveform in CRO Power circuit Two No s TYN612 SCR with heatsink snubber circuit amp two No s power diode provided for power circuit One no center tapped inductor capacitor used for commutation circuits LM723 Based 24V DC
65. ion with variable amplitude amp frequency One no rotary switch to select different type of reference waves Two no potentiometer used to vary the frequency amplitude of reference signal LM311 Based comparator circuit it compares carrier amp reference wave One no rotary switch to select PWM for different types of modulation sin trapezoidal square One no toggle switch with debounce logic for PWM ON OFF All four PWM outputs are terminated on the front panel for device module interface PEC16M2 M3 230V AC Input 15V 15V DC for control circuits This module can be interfaced with IGBT module PECI6M3 or MOSFET module PEC16M2 The following experiments can be done using this firmg module amp device module combination 1 Single phase sine PWM inverter 2 Single phase square PWM inverter 3 Single phase trapezoidal PWM inverter Single Phase Inverter Control Module PEC16M4 2 Four no gate signal to trigger four IGBT MOSFET IC Based carrier triangular wave generation with variable frequency One no potentiometer used to vary the carrier frequency 2KHz to 4KHz IC Based reference square wave generator with variable amplitude Potentiometer used to vary the frequency amplitude of reference signal LM311 Based comparator circuit It compares carrier amp reference wave One no toggle switch for PWM ON OFF All four PWM outputs are terminated on the front panel for device mod
66. le side shaft extension Make benn 11 1 HP DC SERIES MOTOR GENERATOR LOAD SET UP PEC HV ACC3H This set up consists of one number of 1 DC series motor coupled with 2 1 HP DC shunt generator act as load DC Motor Spec Power 1HP 75kw series type Armature voltage 220VDC 4amp Speed 1500 rpm Double Side Shaft Extension Make benn DC Generator Spec Power 1HP 6kw shunt type Armature voltage 180VDC 2 7amp Field voltage 220VDC 0 3amp Speed 1500 rpm Double side shaft extension Make benn Both motor and generator are coupled with base plate 74 12 1 HP DC SERIES MOTOR EDDY CURRENT LOAD SET UP PEC HV ACC3I This set up consists of one number of 1 DC series motor coupled with 2 eddy current load setup DC Motor Spec Power HP 75kw Armature voltage 220VDC 4amps Speed 1500 rpm Double side shaft extension Make benn Eddy Current Load set up 1 hp rating 0 80v lamp current rating 1500 rpm speed Electronic DC voltage controller provided for torque variation Torque sensor with torque indicator Speed sensor with speed indicator Both motor and eddy set up coupled with base plate 13 3 HP DC MOTOR LOAD SET UP PEC HV ACC3M This set up consists of one number of 1 DC shunt motor coupled with 2 mechanical spring balance load setup DC Motor Spec Power 3HP 2 2kw Armature voltage 180vdc 15 amp Field voltage 220vdc 0 8amp Speed 1500 rpm Double side shaft extension Make benn 14 3 HP
67. le switch fuse protection and LED indication for 24V DC supply One no fixed resistive and inductive load 5V DC back EMF provided All four PWM inputs are terminated on the front panel for device module interface 230V AC input 15V 15V DC for control circuits 48 11 Hybrid Control of AC DC Drives Vcs Ser 01 This is an advanced digital system trainer for the students to operate and study the practical position and speed control of AC DC amp Stepper Motor under Micro controller based stand alone operation Matlab Simulink based operation Microcontroller based AC Servo Motor speed control Microcontroller based DC Servo Motor speed control Microcontroller based AC Servo Motor position control System Microcontroller based DC Servo Motor Position control System Study of PI control in the setup Study the Characteristics of Stepper Motor Interfacing with MATLAB and can perform all the possible experiments based on this system Vcs Ser01 consists of the following Microcontroller based PWM Controller Micro 4011 Power Module with graphics display PEC16M7 Motor setup AC servo DC servo Stepper Motor Vcs Acm1 Dcm1 Stm1 MATLAB Compatibility Vcs Mat1 12 Speed Control of AC amp DC Drives VSPM X LCD 01 This module is used to drive the 3 phase AC amp DC motors It is operate at single phase AC input 230V Protection circuits provided for o
68. n 230V AC input for power circuit One number of illuminated switch provided for 230V on off Fuse provided for input side to avoid overload One number of 230V lamp provided for load One number 230 9V step down transformer provided for output waveform measurement in CRO All are mounted in the PCB fixed with wooden cabinets 10 Basic Series Inverter Trainer VPET 207 66 11 Single VPET 209 Consists of scr firing circuit scr inverter power circuit output L C filter IC based firing pulse generation to trigger two SCRs One number of potentiometer provided for firing pulse frequency variation 300 600H2 Pulse transformer used for gate pulse isolation Pulse output terminated at connector in the PCB for scr patching Two number of TYN612 scr inductor capacitor forms basic series inverter power circuit 24V DC 2amp provided for series inverter power circuit input One number of toggle switch provided for dc on off with indication Necessary test points provided for varies sections for waveform measurement 230V AC input 15vdc for control circuit input All components are mounted in the PCB fixed with wooden cabinet Phase Cycloconverter Module Consists of cycloconverter firing circuit SCR power circuit load IC based firing pulse generation to trigger four SCR One number of potentiometer provided for firing angle variation O 180 Two number of toggle switch provided to sel
69. ns benn Speed sensor with speed indicator 20 1 HP THREE PHASE AC MOTOR GENERATOR SET UP PEC HV ACC3B This set up consists of one number of 1 three phase ac motor coupled with 2 1 HP DC shunt generator act as load with 3 digital speed indicator Vi Microsystems Pyt Ltd established in 1986 with a prime motto to Design and Develop the TE and Software products is headed by an educationalist and Ex Scientist fram Government of India with the enormous experience gained i in Research amp Development This organization had established to keep i in tune with the dev reloping technologies i in the field of Electrical Electronics Instrumentation Mechanical Chemical etc The Company has its own massive three stroke building with a built in area of about 18 000 square feet in Chennai The company has a effective work force of about 400 people working In various departments such as Sales Service R amp D Production Quality Control Finance Purchase Project ete Each department has well stuffed Engineers and highly qualified Professionals working to achieve the objectives of the organization The company has its own R amp D wing recognized by Department of Scientific amp Industrial Research Government of India By increasing its operations multifold the company could provide employment to more people in its various different departments To start with the company was engaged i in the manufacture of Microprocessor Trainer
70. nt on A C side 5 Supply power factor Vs slip P U Characteristics at different firing angle 6 System efficiency Vs slip curves at different angle at full load Determination of Transfer function 18 DSP Based Static Krammer drive PECI6HV10C It consists of three major parts namely SCR 3 phase inverter DSP Based inverter firing circuit Slip ring induction motor setup with rotor converter circuit amp RL For DC filtering SCR 3 phase Inverter X It consists of 6 Nos of SCRs rated at 1200V 50Amp with suitable heat sinks to form 3 phase fully controlled converter work as a 3phase inverter gt 90 DSP Based inverter firing circuit X TMS320F2407A DSP Based firing circuit Six Isolated gate signals for Full Bridge Converter Firing Angle variable from 180 to 0 through Ramp and pedestal control Gated carrier source at 4 KHz Housed in a Sleek cabinet Test points are provided on the front panel for detailed study of circuit signals by the student Necessary test points are terminated at sockets so that the student can monitor measure study the signals using CRO DVM etc One potentiometer to vary the firing angle One ON OFF switch with indicator provided to power the control circuitry so that the students can monitor all the test points of the control circuitry for correct functioning 38 Slip ring motor with diode bridge rectifier 3 phase 1 hp slip ring induction motor
71. ntrol of Single Phase Induction Motor Using Cyclo Converter PEC14HV9 This module is designed for center tap transformer Cyclo Converter It consists of 4 synchronized firing pulses 4 SCRs Relevant Power supply etc for frequency division of 1 2 3 amp 4 Main Circuit 4 SCRs Rating 1200V 25Amp 4 Synchronized firing pulses to trigger SCRs Digital firing for frequency division of 1 2 3 amp 4 Power Supply Input 230V 10 50Hz single phase AC 15V DC 0 5A regulated output for the trigger circuits Center tape Transformer Output 0 230Volt AC Frequency 50 2 HZ 50 3 HZ amp 50 4 HZ The output can be loaded with R L or AC MOTOR 0 5hp Suggested Experiments L Study of Speed control of AC motor using Cyclo Convertor 9 Speed Control of Three Phase Slip Ring Induction Motor Using Static Kramer Drive PEC16HV10B This setup designed for open loop speed control of 3 phase Slip Ring induction motor using SCR converter amp inverter circuit x F Pal gett es LU 4 i Eal E Ja H L i hom i y Lomy SESU ee fara It consists of three major parts namely SCR 3 phase inverter SCR 3 phase inverter firing circuit Slip ring induction motor setup with rotor converter circuit amp RL For DC filtering SCR 3 phase Inverter X It consists of 6 Nos of SCRs rated at 1200V 50Ampwith suitable heat sinks to form 3 phase fully controlled converter work as a
72. o 30V DC 3Amp unregulated power supply for circuit breaker input One no toggle switch to ON OFF DC power supply Fuse provided for protection Suggested Experiments Testing of DC circuit breaker with different current setting Voltage Switching using Hardware Details Model PEC14M19 Integrated circuit based 3059 3079 ZVS circuit Power circuit consists of one SCR and one TRIAC user can select either one device at a time 24V AC Operation External Resistor Lamp load provided All output of IC s provided by banana connectors so users can patch and study ZVS One No Pot is provided for vary the frequency of Ramp used for ZVS applications One No Pot is provided for vary the AC cycle used for ZVS applications Mimic diagram provided in PCB fixed nice powder coated cabinet Experiments Study of ZVS using TRIAC Study of Half cycle ZVS using SCR ZVS Application Study of integral cycle control using TRIAC or H W Integral cycle control using SCR PART II IGBT MOSFET RELATED PRODUCT I IGBT MOSFET STATIC AND DYNAMIC 2 IGBT MOSFET SCR TRIAC DIAC CHARACTERISTICS TRAINER Characteristics Study Trainer PEC16M1 A 1 BJT IGBT MOSFET Characteristics Trainer PEC16M1 Basic switching characteristics study trainer Consists of three separate sections for IGBT Basic static characteristics study trainer MOSFET and BJT power circuit LM 723 based variable DC power supply
73. oltage variation One no potentiometer used to vary the Vak One no high voltage fixed load resistor One no toggle switch to ON OFF gate voltage Two no DC ammeter voltmeter multimeter provided to measure I amp Vay la 230V AC input Power ON OFF switch All components are mounted on a screen printed PCB fixed on a nice wooden cabinets Suggested Experiments Static anode cathode VI characteristics of SCR at different gate current 3 TRIAC VI Characteristics Study Trainer PEC16M1C Basic VI characteristics study trainer Consists of one no BTAI2 TRIAC with heat sink LM723 based 20V DC power supply for gate voltage One no potentiometer used to vary the gate current 0 30 50V DC variable power supply for voltage variation One no potentiometer used to vary the Vmt1 mt2 One no high wattage fixed load resistor One no toggle switch to ON OFF gate voltage Two no DC ammeter voltmeter multimeter provided to measure device parameters 230V AC input Power ON OFF switch with indication All components are mounted on a screen printed PCB fixed on a nice wooden cabinets X l Consists of one no DIAC with proper heat sink 30V DC variable power supply for MT1 MT2 voltage variation One no potentiometer used to vary the MT1 MT2 voltage One no high wattage fixed load resistor One no toggle switch to ON OFF DC voltage Two No s DC ammeter voltmeter multimete
74. oltmeter to show the Current and Voltage output of the Converter 3 Ammeter provided to show the 3 Current outputs of Rotor 3 Ammeter provided to show the 3 Current outputs of Stator 3 Ammeter and One Voltmeter provided to monitor the 3 current input from the line Hall effect current transducer are provided to measure 1 Stator Currents i Rotor Currents im Converter Output Current iv Inverter output currents 37 Hall effect voltage transducer are provided to measure voltages at various points of the experimental setup Fig 4 Necessary test points provided for obtaining oscillographic waveform record of supply voltage supply current stator voltage stator current DC link voltage DC link current inverter feedback current and rotor current waveforms The above setup is able to measure the following parameters a Steady state Behaviour of Drive b Transient state Behaviour of Drive The Software has provision to record the following in the computer and graphical hard copy can be taken 1 No Load speed Vs firing angle characteristics 2 Torque speed characteristics at different firing angle 95 to 160 in step 10 or by user setting 3 Torque 2P U Vs DC link current 0 P U to 3 75 P U at firing angle 95 to 145 4 Full load supply current Vs slip characteristics at firing angle 95 to 145 Here supply current is computed as phasor sum of stator current and inverter curre
75. on Output Over Load or short circuit protection Input 230V AC 5 50Hz operation 7 Three Phase PECI4M7HV1 Parallel Inverter This trainer is designed to study the working principle of three phase parallel inverter This set up consists of a Three phase parallel inverter firing circuit b Parallel inverter power circuit c LM723 based 23V DC source a Three phase Parallel Inverter Firing Circuit IC Based 3 square wave generation with 120 phase shift with frequency variation One number of potentiometer provided for frequency adjustment 20 60Hz 21 Six numbers of pulse transformer provided for SCR gate pulse isolation Gate carrier logic implemented for SCR gate pulses One number of toggle switch with debounce logic provided for all six pulse ON OFF All pulses are terminated in the front panel for SCR patching Necessary test points provided on the control circuit for waveform measurement b Parallel inverter Power Circuit Six number of TYN 1225 SCR with Suitable heat sink snubber circuit provided for power circuit Six number of power diode provided for fly back operation Three number of ac capacitor provided for SCR commutation One number of three phase 24 24 0 24 24 0 24V 3Amp transformer provided for parallel inverter power circuit Necessary terminals of SCR diode transformer are terminated in the panel for wiring c LM723 based 24V DC So
76. ontrol circuit mosfet power circuit amp load 65 Ao e ie ge TL494 pwm controller IC based pwm generation for mosfet chopper One number of potentiometer provided for pwm frequency adjustment One number of potentiometer provided for pwm duty cycle adjustment High speed opto provided for pwmisolation IR2110 driver ic used for pwm driving IRF840 mosfet used for power circuit 24V DC 2amp provided for chopper power circuit input One number on off switch with indication provided for dc voltage 230V AC input 15V DC for control circuit 8 Line Synchronized UJT Triggering Module VPET 200 Consists of ujt firing circuit scr power circuit amp load 2N2646 UJT based firing pulse generation 230 24vac provided for ujt firing circuit input and also line synchronization 1 1 pulse transformer used for gate pulse isolation One number of potentiometer used for firing angle adjustment 10 170 Pulse output terminated at connector in the pcb for scr patching One number TYN612 scr with heat sink fixed load resistor forms half wave controlled converter power circuit 24V AC 2amp provided for power circuit input with on off switch Fuse provided for protection 9 LAMP CONTROL USING DIAC TRIAC VPET 201 Consists of triac based ac regulator for lamp intensity control DIAC R amp C used for triac firing pulse variation One number of potentiometer used ac variable R for firing angle variatio
77. ose Supply is terminated to power circuit via three pole MCB and fuse of proper value 5 Thyristor Chopper for SCR DC Drive PEC14HV7 Consists of SCR power circuit and firing circuit IC Based firing pulse generation to trigger auxiliary and main SCR Pulse transformer provided for gate pulse isolation One potentiometer used to vary the duty cycle ratio of PWM 10 90 Two no toggle switch with debounce logic for ON OFF gate pulse Power circuit consists of two no s TYN1225 SCR diode forms auxiliary SCR commutation circuit Fixed L C provided for power circuit commutation One no diode bridge converter with filter capacitor convert input 230V AC to DC for power circuit input MCB Provided for input AC ON OFF over current protection One no diode converter provided for field circuit DC motor control experiment optional 230V 50Hz Input Built in 15 15V DC for control circuit Provision to control the duty cycle ratio from external source voltage 0 SV Power ON OFF switch necessary test points for firing circuits Suggested Experiments High voltage auxiliary SCR commutated chopper with R RL load 2 Speed control of DC shunt motor using SCR chopper 6 Single Phase Parallel Inverter High Voltage PECI4M7HV Input 24V DC 2Amp Output Voltage a 230V AC SOVA b 24V AC 50VA Output Frequency 50Hz to 100Hz Variable a Parallel Inverter Firing Circuit 4
78. ower circuit consists of four No s SCR TNY612 four no diodes Two No s center tapped inductor and capacitors provided for power circuit commutation LM 723 Based 24V 2A DC power supply with LED indication One no toggle switch used to ON OFF 24V DC power supply Over load and short circuit protection provided for DC power supply 230V 50Hz AC input 15V DC 1AMP for control circuit 14 One no fuse provided for power supply protection necessary test points provided Suggested Experiments 1 Study of inverter firing circuit 2 Testing of SCR inverter with R load with frequency variation 8 SCR Series Inverter PEC14M6 Consists of SCR power circuit and firing circuit IC Based firing pulse generation to trigger SCR One no pot used to vary the frequency of firing pulse 300 600Hz One no toggle switch to ON OFF SCR gate pulses 1 1 Pulse transformer used for gate pulse isolation Pulse output terminated in the PCB for user patching Power circuit consists of two No s tapped SCR TYN612 center inductor center tapped capacitor LM 723 Based 24V 2A DC power supply with LED indication One no toggle switch used to ON OFF 24V DC power supply Over load and short circuit protection of input DC 230V 50Hz AC input 15V DC 1AMP for control circuit x One no output PI filter to filter series inverter output volta
79. p 75kw Double side shaft extension Armature voltage 18Q0vdc 5 lamp Make benn Field voltage 220vdc 0 3amp Speed 1500 rpm DC Generator Spec Double side shaft extension Make benn Power lhp 6kw shunt type Armature voltage 18Q0vdc 2 7amp Eddy Current Load set up Field voltage 220vdc 0 3amp Speed 1500 rpm 1 hp rating Double side shaft extension 0 80v lamp current rating Make benn 1500 rpm speed Electronic dc voltage controller provided for Both motor and generator are coupled with base torque variation plate Torque sensor with torque indicator Speed sensor with speed indicator Both motor and eddy set up coupled with base plate 72 6 440 DC MOTOR EDDY CURRENT LOAD SET UP PEC HV ACC3F This set up consists of one number of 1 dc shunt motor coupled with 2 eddy current load set up with 3 and torque indicator DC Motor Spec Power lhp 75kw Armature voltage 44vdc 2amp Field voltage 220vdc 0 3amp Speed 1500 rpm Double side shaft extension Make benn Eddy Current Load Set up 1 hp rating 0 80v lamp current rating 1500 rpm speed Electronic dc voltage controller provided for torque variation Torque sensor with torque indicator Speed sensor with speed indicator Both motor and eddy set up coupled with base plate 7 1 HP PMDC MOTOR LOAD SET UP PEC HV ACC3J This set up consists of one number of 1 pmdc motor coupled with 2 mechanical spring balance load set up with PMDC Motor Spec Power lhp 75k
80. phase AC induction motor or universal motor using SCR based V F controller open closed loop SCR Based single phase converter and inverter forms V F controller Variable voltage achieved by controlling the firing angle of SCR converter Variable frequency achieved by controlling the firing pulse frequency of SCR Mc Murray inverter SCR Converter and Firing Circuit x Op amp based linear firing circuit gives 0 180 d firing angle variation One no potentiometer used to vary the firing angle adjustment All four pulses isolated by pulse transformer and terminated in the front panel Four No s TYN1225 SCR forms single phase fully controlled converter with LC Filter gives 300V DC to SCR inverter MCE and fuse DC side provided for over current protection SCR Mc Murray Inverter and Firing Circuit X IC based firing circuit with variable frequency 10 50Hz 0 5V DC adjust the firing angle frequency Four No s Firing pulse with pulse transformer isolation terminated in the front panel 25 3 Speed Control Induction Motor Controller Using SCR Inverter PEC14HV5C Four No s TYN612 SCR and four No s diode forms power circuit Four no Capacitor and two No s Center tapped inductor for commutation Separate control circuits for adjusting V F ratio Provision to control the V F ratio in external 0 5V DC closed loop Input 230V AC Output 0 230V variable AC and 10 50
81. push to on switch provided for mono stable input trigger One no reset switch to re start the operation Transistor based pulse amplifier for pulse amplification One no bridge rectifier converters 230V AC to DC with filter circuits for SCR power circuit input Five No s AC capacitor used for SCR commutation 230V AC input 15V DV for control circuit Suggested Experiments l 2 Testing of SCR ring counter in auto mode with different frequency Testing of SCR ring counter in manual mode 5 Fast Recovery Diode Characteristics Study Module VPET 304 This module consists of oscillator circuit for switching pulse generation One BJT driver One BJT for power switching 40 X One Fast Recovery diode One slow regulated diode module rating 700V 1A One 24V regulated DC voltage for power switching One mains ON OFF control circuit One min max switch for frequency selection Test points provided to test the waveform mounted on a front panel Schematic diagram is screen printed in the front panel switch for AC Phase Control Using SCR TRIAC amp DIAC PEC14M22 It consists of UJT firing circuit amp SCR AC regulator DIAC firing circuit with TRIAC AC regulator UJT Firing Circuit with SCR AC Regulator x Line synchronized UJT triggering circuit line synchronization achieved by 230V 9V step down transformer Built in 24V AC for firing circuit input One No s Toggle switc
82. put protection current selection All are mounted on a moveable cabinet 3kw rating Fuse provided for input protection Banana connector provided for load input All are mounted on a moveable cabinet Banana connector provided for power input B INDUCTIVE LOAD PEC HV ACC2 3 THREE PHASE LOADING RHEOSTAT 1 SINGLE PHASE INDUCTIVE LOAD PEC HV ACCI1C PEC HV ACC2A 5AMP capacity Variable type Single phase input Banana connector provided for input X Fuse provided for protection 2 THREE PHASE INDUCTIVE LOAD PEC HV ACC2B SAMP capacity Variable type Three phase input Banana connector provided for input Fuse provided for protection r ao Te ae X Ikw rating Three phase input Different selector switch provided for current selection 3 THREE PHASE INDUCTIVE LOAD Fuse provided for input protection PEC HV ACC2C All are mounted on a moveable cabinet Banana connector provided for load input SAMP capacity Variable type Three phase input Banana connector provided for input Fuse provided for protection oe Ie oe or OF 70 C MOTOR LOAD PEC HV ACC3 1 1 HP DC MOTOR LOAD SET UP PEC HV ACC3A 1 1 hp dc shunt motor spring balance load set up PEC HV ACC3A 2 1 hp dc shunt motor generator load set up PEC HV ACC3B 3 1 hp dc shunt motor eddy current load set up PEC HV ACC3C 4 1 HP 440 VDC shunt motor spring balance load set up PEC HV ACC3D 5
83. r provided to measure device parameters 230V AC input Power ON OFF switch LED indication All components are mounted on a screen printed PCB fixed on a nice wooden cabinets Suggested Experiments Static VI characteristics of DIAC 5 Transient Characteristics of SCR and Suggested Experiments MOSFET VPET 216 1 Static VI characteristics of TRIAC at different gate current 4 DIAC VI Characteristics Study Trainer PEC16M1D Basic DIAC VI characteristics study trainer a Transient Characteristics of SCR X One SCR TYN 612 with proper heat sink Turn ON transient OR turn off transient characteristics can be studied IC Based square wave generation for Vax and Vox One No of fixed load resistor b Transient Characteristics of MOSFET X One IRF840 MOSFET with heat sink One no 15V 30V power supply Built in for Vps One no of 555 based square wave generation with transistor driver circuit One no of fixed load resistor c Power Supply x 230V AC Input 15V DC for control circuit Power ON OFF indication switch with 6 Dynamic Characteristics of SCR amp TRIAC VPET 216A This set up is designed to study the TURN ON amp TURN OFF Characteristics Dynamic characteristics of SCR and TRIAC devices This set up consists of Features X One number of SCR with proper heat sink is provided One number of TRIAC with proper heat sink is provided One no of Sq
84. rcuit This setup consists of Smart power module VPET106A b Chopper Inverter controller module PEC 16HV2B Ihp Single phase AC Motor setup SMART POWER MODULE VPET 106A Uncontrolled Bridge rectifier Rated for 600V 35 Amps for converting AC input to DC link voltage DC link capacitors provided 6 Nos of IGBTs from a package of 6 devices contribnute to form full bridge Inverter with one set of bridge is 180degree out of phase from the other Snubber circuit is provided to each device High speed Optos are provided to isolate gate control circuitry 54 Two no of potentiometer are provided one to vary the duty cycle of armature circuit and another duty cycle of field circuit Pulse ON OFF switch is provided to enable or disable the pulse at the pulse output connector One no of toggle switch is provided to select either four quadrant chopper mode or speed control mode One no of toggle switch is provided to select either open loop or closed loop operation One no of push to ON switch is provided to Reset the module Four no of push to ON switch is provided to select either forward running or Breaking or Reverse running or Breaking One no of ON OFF section is provided to power ON OFF total module Testing point terminals are provided for armature pwm and field pwm signals One no of LCD is provided to view the duty cycle of armature and field pwm signal and speed of motor One no of D
85. rectifier One no of ON OFF switch for AC Input Bridge output terminated by connector for motor field One no of LED Indicate field voltage status 13 Speed Control Circuit for Universal Motor VPET 212 One no of Phase control IC used for pulse generator One no of potentiometer used to vary firing the firing angle 0 180 Pulse amplifier and pulse isolation provided 1 No of 1 1 pulse transformer used for pulse isolation TRIAC used as power device 230V AC used for power circuit input Necessary test points and SCR input and output connectors are provided for easy studying and patching One no of SPDT provided to ON OFF AC Input One no LED indicate the input AC Status Universal motor as load 14 Closed Loop Control of Fhp AC Induction Motor VPET 213 One no of Phase control IC used for pulse generator One no of potentiometer used to vary firing the firing angle 0 180 Pulse amplifier and pulse isolation provided 2 Nos of 1 1 pulse transformer used for pulse isolation 2 Nos of SCR used as power device 230V AC used for power circuit input Necessary test points and SCR input and output connectors are provided One Analog PI controller for closed loop operation One FHP AC Induction motor without loading arrangement Make Panasonic with tacho feedback arrangement One no of fuse provided for output section for output current protection One no of SPDT Provided to ON OFF AC input One no
86. resonant converter with zero current switching MOSFET used as a Power device 24V DC input for power circuit 4 MOSFET Based Buck Converter VSMPS 05A One number of powers MOSFET IRF840 used as power switch with suitable heat sink TL494 IC based PWM generator One number of high speed Opto isolator provided for PWM isolation Driver IC IR2110 used to drive power switch High frequency transformer provided for isolation Power circuit I P voltage 15V DC Output voltage 0 5 VDC 1 amp 230V AC input 15 DC for control circuit One number of fuse provided for protection Voltage feed back from the output for closed loop operation One no of Potentiometer used for PWM variation L amp C provided for filters 61 5 MOSFET Based Boost Converter VSMPS 06A One number of powers MOSFET IRF840 used as power switch with suitable heat sink TL494 IC based PWM generator One number of high speed Opto isolator provided for PWM isolation Driver IC IR2110 used to drive power switch High frequency transformer provided for isolation Power circuit I P voltage 15V DC Output voltage 0 25 VDC 1 amp One number of fuse provided for protection Voltage feed back from the output for closed loop operation L amp C Provided for filtering 6 MOSFET Based Buck Boost X TS 9 amp Converter VSMPS 07A It consists of two sections A DC chopper control Circuit with variable duty cycle ratio b MOSFET bas
87. rier logic implemented for SCR self starting One No Toggle switch with debounce logic for pulse ON OFF All six pulses output terminated in the front panel for device module interface Speed sensor interface provision for motor control operation b SCR Power Circuit X Power circuit consists of six No SCR SKKT92B16E rating at 1200V 90 AMP two no power diode rating at 1200V 50AMP All terminals of diode and SCRs terminated on the front panel for external connection One No 3 Pole MCB provided to ON OFF input three phase AC 18 Test points to view the signals at each levels Indicator and fuse provided for mains R Y B c Suggested Experiments o 3 Single Three phase half and fully controlled converter with R and RL load optional Three phase AC regulator with R and RL load load optional Phase Dual Converter PEC20M1 amp 20M2 a Firing Module X 8 nos pulses for P group and N group SCR converter 1 No of ZCD Generator circuits with test points is provided to give reference signals Touch keys to select and vary the firing angle One pulse ON OFF switch and power ON OFF switch is provided Necessary test points provided for waveform study 5V DC amp 9V AC for control circuit LCD Display is provided All components are housed in a fine powder coated cabinet b Power Circuit X 8 Nos of SCR s with snubber protection is provided for P N group conv
88. ries Inverter High Voltage PECI4M6HV Single Phase Cyclo Convertor High Voltage PECI4HV9 Single Phase Mc Murray Bed Ford Full Bridge Inverter VPET 111A Three Phase Mc Murray Bed Ford Full Bridge Inverter VPET 111 Three Phase Cyclo Convertor PECI4HV11 Three Phase Diode Characteristics Trainer PECI4HVSD V SCR BASED AC DC DRIVES P 2 DC Motor Speed Control Trainer PEC04 Speed Control of Single Phase Induction Motor PEC14HV4C 11 12 12 13 13 14 14 15 is 16 16 16 17 18 18 19 19 20 2i 21 p ox 23 23 24 24 25 VI 10 11 WA 13 14 15 16 ee 18 Speed Control of Three phase Induction motor Controller using SCR Inverter PECI4HV5C Speed Control of DC Shunt Motor using Three Phase Fully Controlled Converter VPET 301 Closed Loop Speed Control of PMDC Motor using SCR Converter PEC 03A Speed Control of DC Shunt Motor using SCR Dual Converter PECI4HV6A Thyristor DC Chopper PECI4HV7 Speed Control of Single phase Induction motor Using Cyclo Converter PECI4HV9 Speed Control of Three phase Slip Ring Induction Motor using Static Kramer Drive PECI6HV10B DC Series Motor Controller using Jones Chopper PEC14M21A AC Servo Motor Position Control Trainer PEC 02 Transfer function of Two phase AC Servo motor speed Control Open Closed loop system PECOOA Transfer Function of AC Servo Motor VPET 302 Transfer Function of DC Servo Motor VPET 300A
89. rinciple and demonstrate various section of a Three phase IGBT Based SPWM Inverter amp V F Control This trainer is provided with Hall Effect Current Transducers at required lines for protection and used for measuring the current The front panel mimic diagram shows various section of the trainer like Power circuitry Protection Input circuitry etc Various Test points provided at the front panel allows the students to study various signals of the circuitry of the trainer Features IGBT based sine wave Inverter Output Input 230V AC 3 Output 5 Amps per Phase Frequency 10Hz 50Hz 58 Hall Effect Current Transducer provided to measure DC link voltage and AC output Various protection circuits provided Mimics circuit screen printed in the front panel More than 8 Test points are provided Housed in a sleek box Power Circuit Uncontrolled Bridge rectifier Rated for 600 35Amps for converting AC input to DC link voltage DC link capacitors provided 6 Number of IGBTs are provided to form three half bridges Snubber circuit is provided to each device High speed Optos are provided to isolate gate control circuitry IGBT IC drivers are used to drive switches Output 0 to 220Volt AC 5 Amp at each phase One MCB provided to switch on the AC input to the power circuit One DC Voltmeter provided to measure the DC link voltage One hall effect current transducer provided in the
90. rovided for isolation Power circuit I P voltage 15V DC Output voltage 0 5 VDC 1 amp 230V AC input 15 DC for control circuit One number of fuse provided for protection Voltage feed back from the output for closed loop operation All components are mounted on a nice cabinet with necessary test points amp terminals One no of Rheostat provided for load Necessary ammeters amp voltmeters provided PART II OTHER PRODUCTS POWER ELECTRONICS TRAINERS 2 FOR POLYTECHNICS Single Phase Fully Controlled Converter VPET 205 Single Phase Half controlled Converter VPET 204 Consists of scr firing circuit half controlled scr power circuit and R L load TCA 785 IC based firing pulse generation One number potentiometer provided for firing angle adjustment O 180 230 9V synchronization transformer provided for firing circuit Carrier logic implemented for pulse with on off switch Pulse transformer used for gate pulse isolation All pulses are terminated in the pcb for scr patching Two no TYN 612 scr and power diode used for power circuit Necessary test points provided for waveform measurement 24V AC 2amp provided for power circuit input with on off switch 63 Consists of scr firing circuit fully controlled scr power circuit and R L load TCA 785 ic based firing pulse generation One number potentiometer provided for firing angle adjustment O 180d 230 9V synchronization
91. rter power circuit One voltmeter indicate DC rail voltage MCB for input ON OFF over current Specification x n n 230V AC 50Hz Three phase 0 240V AC variable voltage each phase 10 50Hz variable frequency each phase Output rating 10Amp each phase Motor RL can be used a load open closed loop possible optional Input voltage Output voltage 2 IGBT Based Four Quadrant Chopper PECI6HV3 el Power Module X Power Module is control Applications IGBT amp DIODE used as power device Input 1 Phase 50 Hz AC Output i 3 AC V F control for 3 gt drive applications ii 3d AC Output for inverter applications Voltage control 1200V 25A 3 Phase IGBT Inverter Bridge package Additional Features 1200V 25A converter Bridge for AC DC power conversion 1 No of Hall Effect current sensors to sense the output current of the Inverter Bridge All the PWM signals are isolated using Opto Isolator Protection circuit for over current with LED indication Independent Power supplies for all Isolated circuits Voltmeter to Indicate the DC Link Voltage All current PWMS amp Feedbacks are terminated at Front panel FRC Connectors are provided to Interface with the External digital controllers All the Input Output Lines are Terminated at Banana sockets designed for Motor Control Module X Vdspic4011 based pwm generator for four quadrant chopper cir
92. s and Interface ae With the efforts from our Research and Development Team the company has expanded i activities in various areas as follows Microcontroller Process Control Fo risen Digital Signal Processing Power Electronics amp Drives Data Acquisition Systems Personal Computer Trainer Systems VLSI Embedded Systems ete Mow DUF annual turnover is around Rs 30 Crores At present the company is concentrating in various new fields like Advanced Control Systems Solar Heat Pump Trainers Advanced Process control Chemical Reactors Distillation Column Image Processing Nuclear Electronics Defence projects etc The Company also offer good sales support with effective service backup and technical support team The company has built upa high degree of reputation and credibility by its dedicated after sales service support The company also few export orders i in Singapore Malay reia Tunisia Ethiopia Ghana ctc It is also engaged iri distributing some of the good products manufactured by other manufacturers The company is alsa distributing Software s like OrCAD Nucleolus RTOS Ride C LAR Workbenches MiPower VisSim PLC SCADA ete Total Customer Satisfaction Vi Microsystems Pvt Ltd EMBEDDED POWER ELECTRONICS MECHATRONICS Process control COMMUNICATION
93. sPIC 30F4011 Based controller for SPWM Multiple PWM Generator Microchip s dsPIC30F4011 16 Bit Digital Signal Controller Operating at 33 nS amp 30 MIPS On Chip Motor Control Peripherals 6 Motor Control PWM Unit with Programmable Dead Band 10 Bit 9 53 Channel ADC with 500 KSPS 30 General Purpose I O Lines 5 GP Timers Quadrature Encoder Interface amp 4 Input Capture Pins Memory On Chip 48K Flash Program Memory 2K RAM for Data Memory 1K EEPROM Memory Additional Features On Chip serial port and the serial port lines are isolated ADC Input Lines are protected and Terminated Bead Inductances are provided at VCC amp GND for EMI Rejection PWM Output Lines are Terminated at a separate FRC Connector 16x2 Alphanumeric LCD Display and 3 keys Keypad Switch Mode Power Supply Input 180V 230V AC 50 60 Hz Output 5 V 3 0A amp 12V 500 mA Protection Over Current amp Short circuit Protection Provision to select different type of PWM control technique SPWM Multiple PWM Provision to select PWM output for UPS 3 AC Drive applications b 3 IGBT Based Power Module Power Module is designed for Motor control Applications and UPS Application IGBT amp DIODE used as power device Input 1 Phase 50 Hz AC Output i 3 AC V F control for 3 Q drive applications ii 3 AC Output for UPS Applications Voltage control 1200V 25A 3 Phase IGBT Inverter Bridg
94. se MOSFET Module PECI6M2 Single Phase IGBT Module PEC16M3 Single Phase PWM Inverter Control Module PECI6M4 1 PWM Inverter Control Module PEC16M4 2 Chopper Control Circuitry Module PECI6M5 Three Phase IGBT Power Module PECI6HV2A Chopper Invertor PWM Controller PECI6HV2B 10 IGBT Based Chopper Circuit PEC16M3 M5 11 Hybrid Control of AC DC Drivers Vcs Ser01 12 Speed Control of AC DC Drivers VSPM LCD0O1 IGBT MOSFET BASED HIGH VOLTAGE APPLICATION TRAINERS oe a Te a 1 Phase Input IGBT Based Three Phase Inverter PECI6HV5 IGBT Based Four Quadrant Chopper PEC16HV3 Three Phase Input IGBT Based Four Quadrant Chopper PEC16HV7 SOOVA on line off line UPS Trainer Module PECI6HV4 DSP Based SOOVA UPS Trainer PECIO6HVDS UPS IGBT Based Three Phase PWM Inverter PECI6HV2A _iv 42 42 43 43 43 44 44 44 44 45 45 46 46 47 47 48 48 49 49 50 50 5I 5I 53 IV IGBT MOSFET BASED AC DC DRIVES Se ae Speed Control of Single Phase Induction Motor using IGBT Chopper PECI6HV1 Speed Control of Slip Ring Induction Motor using IGBT Chopper PECI4HV10 A DC Position Control System PEC 01 DSP Based DC Motor Position Control VPET 107 Amplidyne Characteristics Trainer VPET 403 Speed Control and Electronic Braking of DC Shunt Motor VPET 404 Electrical Braking of Three Phase Induction Motor VPET 405 Synchro Transmitter and Receiver PEC 03 V DC DC CONVERTER SMPS TRAINER
95. splay the speed position and velocity 6x2 matrix keyboard provided to feed the input Converter 4 Quadrant MOSFET Chopper circuit to drive the motor Dual MOSFET driver with 4 MOSFET and bridge rectifier with filtering circuit also provided Motor Setup 12V 1 5A PMDC Motor with gear 30 1 ratio Quadrature optical encoder of 512 ppr in the without gear side One opto coupler provided for zero sensing This setup fixed in a metal base plate Other Features Built in Power supply Cables provided to link the mechanical setup and controller unit Experiments Speed control of DC Servo motor Position control of DC servo motor Measure the velocity 5 Amplidyne Characteristics Trainer VPET 403 Amplidyne Generator Set Comprising Capacity IKW Voltage 220 110V DC Speed 3000 RPM Amplidyne Generator Set A C Motor as Prime Mover The above Amplidyne Generator will be directly coupled with one 2 KW capacity protected type AC squirel Cage Induction Motor suitable to operate on AC 400 440V 3 phase 50 cycles Sec Speed will be 2900 3000RPM Rating Continuous Cooling Self Fan Cooled Type Mounting Horizontal Foot Mounting Coupling amp Mounting Both the above Amplidyne Generator and the AC Motor will be placed on a fabricated channel iron common base plate and to be coupled with each other by means of a flexible coupling Control Gear The above Amplidyne Genera
96. synchronization achieved by step down transformer Four no firing pulses to trigger four SCRs 1 1 1 Pulse transformer used for pulse isolation One No potentiometer used to vary the firing angle 180 0 Carrier logic implemented carrier frequency 4KHz One no toggle switch with debouncing logic for pulse ON OFF Provision to control the firing angle through external 0 5V Power circuit consists of four no SCR with fuse protection Anode Cathode Gate terminals are terminated in the front panel for user connection 24V AC LAMP provided for power circuit input with ON OFF switch One no fixed R L load provided 230V 50Hz AC input with ON OFF rocker switch fuse for over load Consists of firing circuit SCR power circuit and load IC based firing circuit to trigger two SCRs One no potentiometer used to vary the frequency of firing pulse One potentiometer used to vary the duty cycle ratio of PWM Two no toggle switch with debounce logic for ON OFF pulses Pulse transformer used for gate pulse isolation Two No s SCR and one no diode provided with A K G terminals are terminated on front panel for external connection Two No s fixed R load Two No s capacitor and one no fixed inductor for commutation circuit Separate firing pulse section for line commutation circuit and external pulse commutation circuit 15V DC LAMP for SCR power circuit input and 9V AC for SCR hne commutat
97. t All six scr forms three phase fully controlled converter power circuit Power circuit input and outputs are terminated by banana connector on the front panel Three phase mcb provided for input on off With indicator Input three phase 415v ac Output O 550vdc 5amp P b SCR single phase half controlled converter for field voltage variation One number of TCA785 phase control ic provided for scr firing pulse generation One number of potentiometer provided for firing angle variation 90 20degree Single phase step down transformer provided for supply synchronization Two number of Pulse transformer provided for scr pulse isolation One number of Spdt switch provided for pulse on off All two pulses are terminated on the front panel for power circuit connection Test points provided for wave form measurement Two number of tyn1225 scr with suitable snubber and heat sink provided for Power circuit All two scr ans diode forms single phase half controlled converter power circuit Power circuit input and outputs are terminated by banana connector on the front panel Input Single phase 230v ac Output 100 200vdc lamp Protection circuit over current protection Field failure protection Digital PID controller for closed operation Intel 8051 Microcontroller based CPU card 2 Row x 16 Column LCD Dot Matrix with back light Display Alphanumeric Display single Channel Single en
98. t for power circuit All SCR A K G terminals are terminated individually for external configuration 230V 24V 2AMP transformer provided for power circuit input voltage One no toggle switch to ON OFF 24V AC One no fixed resistor one no fixed inductor provided for load Suggested Experiments L Study of UJT firing circuit 2 Testing of single phase half wave 13 controlled converter Controlled HWR and FWR Using RC Firing PEC14M12C Two separate sections are provided a Half wave rectifier b Full Wave rectifier a Half Wave rectifier One No of SCR rated at 600V 12A is provided R C Based firing Lamp load is provided One potentiometer is used to vary the firing angle of SCR 230V 24V operation b Full Wave Rectifier One no SCR rated at 600V 12A is provided 4 Nos of Diode is used R C Based firing One potentiometer is used to vary the firing angle of SCR 230V 24V operation IV HIGH VOLTAGE SCR APPLICATION TRAINER 1 Single Phase Half amp Fully Controlled Bridge Converter PECI4HV4 17 X Specially designed for high voltage operation It consists of firing module SCR power circuit and high voltage accessories optional a Firing Module X vdspic4011 Micro controller based linear triggering circuit Touch keys to select and vary the firing angle 0 180 Line synchronization achieved by step down transformers and
99. tentiometer One no of carrier wave generation block Generate 3KHz Frequency 3 Nos of PWM IC generate PWM with comparison of each phase amp carrier wave 3 PWM inverted by using NOT gate Final output of 6 PWM used to trigger 6 Nos of IGBT MOSFET Device module with frequency amplitude control Test points are provided to check the waveforms at various stages of the PWM circuitry Built in power supplies for the control circuitry 230V 50Hz 15V amp 5V The module is bought out in a sleek box 10 IGBT BASED CHOPPER CIRCUIT X PEC16M3 M5 It consists of four quadrant chopper control circuit IGBT power circuit load etc CHOPPER CONTROL CIRCUIT X IC Based carrier triangular wave generation with variable frequency One no potentiometer used to vary the carrier frequency 2KHz to 4KHz LM311 Based comparator circuit It compares carrier amp control voltage One no potentiometer used to vary the control voltage so as to vary the duty cycle ratio of PWM 5 to 95 IC Based control logic circuits for generation of PWM for different type of chopper One no rotary switch to select PWM for different types of chopper circuits single two four quadrant chopper IGBT POWER CIRCUIT X Four no IRGBC 20S IGBT forms H Bridge circuit Necessary IGBT terminations for single quadrant chopper two quadrant chopper LM723 Based 24V DC power supply with O C S C protection One no togg
100. teristics of IGBT 7 Measurement of Turn OFF period T OFF 8 Measurement of OFF period 42 3 IGBT Characteristics Trainer VPET 202 Consists of one IGBT power device One no of 12V fixed DC power supply and one no of 30V fixed power supply for characteristics of IGBT One no of potentiometer to vary the gate current One no of potentiometer to vary the collector current Fixed load resistor Power ON OFF switch provided All necessary points terminated in the front panel Provision for connecting ammeter and voltmeter 4 Transient Characteristics of SCR and MOSFET VPET 216 a Transient Characteristics of SCR One SCR TYN 612 with proper heat sink Turn ON transient OR turn off transient characteristics can be studied IC Based square wave generation for Vy and Vok One No of fixed load resistor 43 b Transient Characteristics of MOSFET One IRF840 MOSFET with heat sink One no 15V 30V power supply Built in for Vps One no of 555 based square wave generation with transistor driver circuit One no of fixed load resistor c Power Supply n n 230V AC Input 15V DC for control circuit Power ON OFF switch with indication 5 DYNAMIC CHARACTERISTICS OF MOSFET BJT amp IGBT VPET 216A1 This set up is designed to study the TURN ON amp TURN OFF Characteristics Dynamic characteristics of power devices like MOSFET IGBT amp BJT devices This s
101. the duty cycle ratio High speed opto coupler used for opto coupler used for pulse isolation Built in driver IC for IGBT IPM gate drive Three no hall effect current sensor for output DC current measurement and protection Output over current short circuit protection with LED indication Three phase diode bridge converter and filter capacitor for input DC voltage of IGBT chopper power circuit One voltmeter indicate DC rail voltage MCB for input ON OFF over current Specification Inputvoltage 440V AC 3phase 50Hz Output voltage 0 to 200V DC Oto 200V DC variable voltage Output rating 10Ams Two no IGBT forms two quadrant chopper for field circuit Separate control circuit for PWM generation One pot used to vary the dutycycle ratio of PWM Separate opto driver circuit provided for two quadrant chopper 4 500VA _ On line off line PECI6HV4 UPS Trainer 51 This set up consists of 24V battery module battery charger UPS controller module Battery 2No 12V 60AH Battery connected in series with fuse protection Battery Charger SCR Based battery charger Current set potentiometer for charging current LED indication for over triggle charge 230V AC input setting UPS Controller MOSFET Based push pull inverter G3525 used for PWM generation Three no potentiometer used to vary frequency duty cycle d
102. tical sensor Study of closed loop control of a AC servo motor 32 12 Study of Characteristics of AC servo motor i Speed Vs Armature Voltage un Speed Vs Torque i Armature current Vs torque To determine the transfer function of the AC servo motor Transfer Function of 2 AC Servo Motor Speed Control Open Closed Loop system PEC 00A This trainer is designed to drive the two phase AC servo motor both open loop and closed loop And study of transfer function of motor Two phase AC servo motor Main winding voltage 230V AC Control winding voltage 12V AC Speed 1500RPM Mechanical loading arrangement Speed sensor optical type fixed on the motor shaft for feedback amp speed display It consists of SCR based AC regulator for control winding voltage variation 0 12V AC variable 5Amp capacity Op amp based linear triggering circuit for SCR AC regulator One no toggle switch to select open loop closed loop operation One no digital speed indicator to indicate set speed and actual speed Provision to control the motor speed through external 0 5V DC source 230V 50Hz AC input 15V 15V DC for control circuits Suggested Experiments L Open loop speed control of AC servo motor 2 Closed loop speed control of AC servo motor 3 Transfer function of AC servo motor 13 Transfer Function of AC Servo Motor VPET 302 This setup consists of 1 100W Two phase AC s
103. tor will be provided with one Amplidex unit consisting of suitable excitation Rectifier choke fine control potentiometer for excitation control and necessary control fuses The above AC Motor will be provided with one direct on line starter with Thermal Overload protection Relays 6 Speed Control and Electronics Braking of DC Shunt Motor VPET 404 This trainer is designed to study speed control Forward Reverse and various types of Electrical braking of DC shunt motor 1hp Armature and Field control of DC Shunt Motor a DC Shunt Motor 1 HP Armature voltage 180V Field Voltage 220V Shunt type 1500 RPM Speed display facility b MOSFET Controller 1 Armature control circuit MOSFET Based chopper circuit to vary armature voltage 0 200V DC IC based PWM controller circuit with opto isolator and gate drive circuit Open loop operation One potentiometer used to vary the Armature Voltage b u Field Control Circuit MOSFET Based chopper circuit to vary Field voltage 100V 220V DC IC based PWM controller circuit with opto isolator and gate drive circuit One Potentiometer used to vary O P voltage c Other Features One no of Push button for braking operation One potentiometer used to set of braking 10 90 One no of push button for Inching operation 7 Electrical Braking Three Phase Induction Motor VPET 405 This trainer is designed to study the working p
104. ts of three types of basic firing circuit to trigger SCR Separate sections for R firing RC firing UJT firing circuit amp 24V AC 1AMP provided for firing ee ae circuit input voltage Four No s firing pulse to trigger SCR One potentiometer used to vary the for AC converters regulators 555 Timer based SCR triggering pulse firing angle of UJT firing circuit A A e One potentiometer used to vary the maa transformer used for pulse isolation firing angle of R firing circuit l One potentiometer used to vary the a ieee A _ to vary firing angle of RC firing circuit eine ale a x aac toggle switch oe ON OFF All four pulses terminated on the front 24V AC panel for external interface with SCR device module PEC14M15 24V AC LAMP for power circuit input voltage One no of toggle switch for ON OFF 24VAC One no of SCR with snubber circuit forms half wave controlled converter circuit for checking the firing circuit 230V SOHZ AC input fuse provided for over load protection Four No s of firing pulses terminated on the front panel for connecting external device module UJT firing circuit 1 1 1 Pulse transformer used for UJT firing circuit pulse isolation One no of SCR with snubber circuit forms half wave controlled converter circuit for checking all the three firing x va eee AC input fuse provided ai One no of rocker switch with LED for over load protection ind
105. uare wave pulse generator circuit is provided for SCR TRIAC Gate circuit One no of potentiometer is provided for Gate circuit Square pulse amplitude adjustments One number of Fixed R Load is provided for SCR circuit one number of Fixed R Load is provided for TRIAC circuit Current sensing resistor is provided for SCR anode current measurement Current sensing resistor is provided for TRIAC current measurement One number of square wave pulse generator circuit is provided for SCR Anode cathode circuit amp TRIAC circuit All necessary block outputs are terminated by 4m connectors by external patching All are mounted on wood box with diagram printed PCB 230V AC input with power ON OFF switch 7 Construction of SCR Using Two Transistor PECI6MI1F X One No of NPN transistor amp PNP Transistor provided for SCR circuit One No DC voltage source for SCR in DC mode operation One No 24V AC voltage source for SCR in AC mode operation Simple firing circuit with firing angle variation for AC mode operation Il SCR TRIGGERING Suggested Experiments CIRCUITS TRAINERS Co 1 Study of UJT firing circuit A TYPES OF TRIGGERING 2 Single phase half wave controlled MODULE converter using UJT firing 3 Single phase half wave controlled 1 R R C UJT Firing Module converter using R firing PEC14M12 4 Single phase half wave controlled converter using RC firing 2 555 Firing Module PEC14M13 Consis
106. ule Power Module is designed for Motor control Applications and UPS Application IGBT amp DIODE used as power device Input 1 Phase 50 Hz AC Output i 3 AC V F control for 3 gt drive applications ii 3d AC Output for UPS Applications Voltage control 1200V 25A 3 Phase IGBT Inverter Bridge package Additional Features 1200V 25A converter Bridge for AC DC power conversion 1 No of Hall Effect current sensors to sense the output current of the Inverter Bridge All the PWM signals are isolated using Opto Isolator Protection circuit for over current with LED indication Independent Power supplies for all Isolated circuits Voltmeter to Indicate the DC Link Voltage All current PWM s amp Feedbacks are terminated at Front panel FRC Connectors are provided to Interface with the External digital controllers All the Input Output Lines are Terminated at Banana sockets 47 9 CHOPPER INVERTER CONTROLLER PEC16HV2B PWM This module provides the gating signals for a three phase full bridge inverter and chopper obtained through a sine pulse width modulation PWM technique FEATURES It generates 6 Nos of PWM to trigger the 6 IGBTs provided in the device module for Inverter application Device module Optional Sine PWM technique is used 3 Phase sine wave with 120 phase shift generated through ICs Frequency and amplitude V F or V F can be controlled by adjusting po
107. ule interface 46 Chopper PEC16M5 230V AC input 15V 15V DC for control circuits This module can be interfaced with IGBT module PEC16M3 or MOSFET module PEC16M2 The following experiments can be done using this firing module amp device module 1 Single phase single pulse square PWM inverter Control Circuitry Module Four no gate signal to trigger four IGBT MOSFET IC Based carrier triangular wave generation with variable frequency Potentiometer used to vary the carrier frequency 2KHz to 4KHz LM311 Based comparator circuit it compares carrier amp control voltage One no potentiometer used to vary the control voltage so as to vary the duty cycle ratio of PWM 5 to 95 IC Based control logic circuits for generation of PWM for different type of chopper Single Two Four quadrant One no rotary switch to select PWM for different types of chopper circuits One no toggle switch for PWM ON OFF All four PWM outputs are terminated on the front panel for device module interface PEC16M2 M3 230V AC Input 15V 15V DC control circuits This module can be interfaced with IGBT module PECI6M3 or MOSFET module PEC16M2 optionally The following experiments can be using this firing module amp device module Combination a 8 Three PECI6HV2A Single quadrant chopper Two quadrant chopper Four quadrant chopper unipolar Four quadrant chopper bipolar Phase IGBT Power Mod
108. urce for parallel inverter input LM723 based 24V power supply provided for parallel inverter input 3 Amp Capacity Overload short circuit protection facility LED provided for DC indication 8 Single Phase Series Inverter High Voltage PEC14M6HV This module is designed to demonstrate the working principle of Thyristorised Series Inverter Main Circuit 2 SCRs Rating 600V 12Amp A Potentiometer is provided to vary the load power Snubber circuit is provided to each devices Circuits for commutation triggering SCRs are provided Power Supply Input 230V 10 50Hz single phase AC 24 Volt DC 2 Amp to feed inverter 15V DC 0 5A regulated output 9 for the trigger circuits Single Phase Cyclo Converter High Voltage PEC14HV9 This module is designed for center tap transformer Cyclo Converter It consists of 4 synchronized firing pulses 4 SCRs Relevant Power supply etc for frequency division of 1 2 3 amp 4 Main Circuit n K 4 SCRs Rating 1200V 25Amp 4 Synchronized firing pulses to trigger SCRs Digital firing for frequency division of 1 2 3 amp 4 22 Power Supply X Input 230V 10 50Hz single phase AC 15V DC 0 5A regulated output for the trigger circuits Center tape Transformer Output 0 230Volt AC Frequency 50 2 HZ 50 3 HZ amp 50 4 HZ The output can be loaded with R L or AC MOTOR 0 5hp Suggested Experiments L 10
109. urrent sensor provided to measure input current and output current One no of hall effect voltage sensor provided to measure the output voltage Suggested Experiments L 3m Half wave rectifier Common Cathode arrangement with R Load 3m Half wave rectifier Common Anode arrangement with R Load 3 Bridge rectifier with R Load 24 V SCR BASED AC DC DRIVES 1 DC Motor Speed Control Trainer PEC04 Firing Module X Vdspic4011 Microcontroller based firing circuit using reference ZCD Firing angle and other selections using five no of feather touch keys Pulse enable switch is provided For motor control experiments speed feedback provision is available LCD is provided to view the data of speed firing angle etc Test points are provided to view pulses and ZCD Pulse termination on D socket Power Module X This trainer is designed to drive the 1HP DC motor optional both open loop and closed loop Armature and field pulse control facility is provided It consists of SCR based fully controlled converter for armature voltage variation One no of fixed field supply is provided Suggested Experiments L 2 3 Open loop armature control of DC shunt motor Closed loop armature control of DC shunt motor speed current feedback Field control of DC shunt motor 2 Speed Control of Single Induction Motor PEC1I4HV4C x Phase This trainer is designed to drive the single
110. ut used to generate 4 PWM IGBT MOSFET 2 Nos of PWM output used to generate 2 Pulses SCR 2 Nos of ADC Used to sense the Inverter output voltage and current for feedback 1 No of ADC used to read the battery voltage level for monitoring and protection 1 No of ADC used to read the battery current for protection and monitoring 1 No of I O used sense the main AC Status 6N137 Opto used to isolate the 4 PWMs IR3210 Drive IC used for IGBT gate driver One no of LCD display used to Indicate the Main Volt amp current Battery voltage amp current and Inverter Voltage amp current Provision to select ON line OFF line UPS DSP Controller used for x To generate sine PWM pulses to trigger IGBT MOSFET inverter 52 X C To generate gate pulses for SCR battery charger To select and control the various functions Inverter closed loop Inverter over current protection Solar SCR Battery charger selection Mains sensing SCR Battery charger closed loop operation R oe Battery charger over current protection Battery deep discharge over charge protection Selection of Solar charger SCR Charger Selection of on line off line mode of operation Display of all parameters like current voltage and temperature etc Battery Module 24V 48V 90 AH Battery Two nos of 12V Battery connected in series One no of current sensing transformer and voltage sensing circuits for battery monitoring and protection
111. ver current and over temperature This is work with the dsPIC controller of dsPIC 4011 Open Closed loop function can be able to done by using different selection Module Specification Input Voltage 230V 1 Output AC 165V AC Average Output DC 0 50V Feedback proximitive sensor input D Speed control switches for up and down will be provided Controller dsPIC 4011 based 16 bit operation of PWM generation Motor Specification X oOo 3 415V AC 10O0W squirrel cage induction motor SOV 2A PMDC motor Coupled and fixed in a mechanical frame AC motor is loaded by DC motor generator DC motor is loaded by mechanical spring balance setup Speed sensing arrangement provided in the shaft 49 II IGBT MOSFET BASED HIGH VOLTAGE APPLICATION TRAINERS Single Phase Input IGBT Based Three Phase Inverter PEC16HV5 Six no IGBT IPM forms H bridge three phase sine PWM inverter Sine triangle PWM generation for IGBT switching frequency 2 5HKz One potentiometer used to vary the reference sine wave R Y B frequency One potentiometer used to vary the reference sine wave R Y B amplitude High speed opto coupler used for pulse isolation Built in driver IC in PWM power circuit Three no hall effect sensor for output DC current measurement and protection LED indication for over current short circuit condition Three phase diode bridge converter and filter capacitor for input DC voltage for IGBT inve
112. w pmdc motor Armature voltage 180vdc S5amp Speed 1500 rpm Double side shaft extension Make pranshu 8 1 HP PM DC MOTOR GENERATOR LOAD SET UP PEC HV ACC3K This set up consists of one number of 1 pmdc motor coupled with 2 1 HP PMDC generator act as load 73 PMDC Motor Spec Power lhp 75kw pmdc motor Armature voltage 180vdc 5amp Speed 1500 rpm Double side shaft extension Make pranshu PMDC Generator Spec Power lhp 75kw pmdc motor act as generator Armature voltage 180vdc S5amp Speed 1500 rpm Double side shaft extension Make pranshu Both motor and generator are coupled with base plate 9 1 HP PMDC MOTOR EDDY CURRENT LOAD SET UP PEC HV ACC3L This set up consists of one number of 1 pmdc motor coupled with 2 eddy current load set up PMDC Motor Spec Power lhp 75kw pmdc motor Armature voltage 180vdc S5amp Speed 1500 rpm Double side shaft extension Make pranshu Eddy Current Load set up 1 hp rating 0 80v lamp current rating 1500 rpm speed Electronic dc voltage controller provided for torque variation Torque sensor with torque indicator Speed sensor with speed indicator Both motor and eddy set up coupled with base plate 10 1 HP DC SERIES MOTOR LOAD SET UP PEC HV ACC3G This set up consists of one number of 1 DC series motor coupled with 2 mechanical spring balance load set up DC Motor Spec Power 1HP 75kw Armature voltage 220VDC 4amp Speed 1500 rpm Doub
113. xternal interface Microprocessor MC DSP 230V AC input 15V 15V DC for control circuits Optionally a hall effect current transducer provided for current measurement 4 Single Phase IGBT Module PEC16M3 _ _ Four no IRGBC 20S IGBT with heatsink and snubber circuit 6N137 high speed opto for gate PWM isolation IR2112 2110 Driver IC for gate PWM drive IC Based dead time logic for delay circuit Built in 50 30V 2Amp DC for power circuit input 45 Over current protection circuit with LED indication All devices terminated individually for different configuration By suitable interface with external firing module PECI16M4 M5 it can be work as Single quadrant chopper Two quadrant chopper Four quadrant chopper unipolar Four quadrant chopper bipolar Single phase SPWM inverter Single phase single pulse inverter tS ek a All four device gate pulse inputs are terminated on the front panel for external interface MP MC DSP etc 230V AC Input 15V 15V DC for control circuits Optionally a hall effect current transducer provided for current measurement Single Phase PWM Inverter Control Module PEC16M4 1 Four no gate signal to trigger four IGBT MOSFET IC Based carrier triangular wave generation with variable frequency One no potentiometer used to vary the carrier frequency 2KHz to KHz IC Based reference sine square trapezoidal wave generat

Power Electronics Products List

Contents

Download Pdf Manuals

Related Search

Related Contents