V Instruments

Single Phase Dual Converter Based Drives

Single Phase Dual Converter Based Drives

This set up is designed to study the speed control procedure DC motor using SCR based Dual Converter. This set up consists of,

  1. Dual Converter Power Module
  2. PWM Controller
  3. Accessories (Transformer with IGR)
  4. Dc motor Load set up

SCR POWER MODULE

This power module is designed by using SCR  for 1 Phase Dual Converter applications This power module can be used for DC Motor open loop speed control application by   external PWM controller interfacing

Dual Converter Power Module
Microcontroller based PWM Controller
Power Supply for Field
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Model photo only

  • SCR based 3 phase Controlled Dual Converter
  • 8 numbers of SCR, Ratings @ 1200V @ 25A, fixed With proper heat sink for cooling and
  • Snubber circuit
  • 8 numbers of Pulse amplifier & 1;1 Pulse transformer for all pulse isolation
  • One numbers of 1 Phase 230/9V Supply synchronizing transformer & ZCD Circuit is provided for SCR Pulse generation
  • MCB provided for input power ON/OFF
  • SCR outputs and AC inputs are terminated in banana connector
  • Specifications- Input- 0-230VAC, Output – 0-200V AC/DC @ 5A

 Microcontroller based PWM Controller

This PWM/Firing pulse controller is designed based on Dspic30f4011 controller chip from “MICROCHIP” company  and  this controller can be used  to generate  PWM Signals for SCR, IGBT based power electronics application like DC-AC Inverter ,DC-DC Chopper & SCR  converter based AC/DC/BLDC Switched Reluctance Motor (SRM) control application. PWM output of this controller can be directly interfaced with Power Module through External cable connection.

Features

  • Includes High-Performance Microchip dsPIC30F4011 Microcontroller with 48kb Internal Flash Program Memory
  • 8 Numbers of PWM Outputs up to 15KHZ of switching frequency
  • Internal EEPROM &Five 16-bit Timers
  • Power, Programming and Test LED’s
  • 2MB PROM & 24 Mhz clock speed
  • QEP Sensor /Hall sensor/Speed sensor(Proximity)Interface connector on front panel
  • PWM increment & decrement key &Reset switch is provided
  • 20 X 4 LCD screen &PWM outputs are terminated by Front panel Connector
  • 230VA INPUT with Power ON/OFF switch

 1 phase Transformer with IGR

  • Two number of 230/230vac @5A step down transformer is provided
  • 1 number of IGR-3A (Inter group reactor) is provided- with different tapping’s

PMDC Motor with load set up

  • Type             :           PMDC Motor
  • Power :           100/150W
  • Voltage             :           48V
  • Speed                                               :           1500/3000 RPM
  • Feedback sensor             :           Proximity sensor
  • Loading             :           spring balance loading
  • Make             :           TC /MICRITECH

Spring baance loading

  • One number Brake DRUM with spring balance set up is coupled with the above motor
  • Two numbers of dial indication ( 0-10KG) for Load measurement

 R LOAD

  • One number of 1Ø loading rheostat -1.5 KW with different load selector switch is provided
  • 230VAC/DC Input

 Experiments

 Open loop speed control of DC Motor using speed feedback using Without circulating current mode

  • Testing of Dual converter with & without circulating current mode in R load