V Instruments

Speed Control Of Three Phase Induction Motor Using Single Phase Ac Voltage Controller

To Study Speed Control Of Three Phase Induction Motor Using Single Phase Ac Voltage Controller

This set up consists of

  1. Microcontroller based PWM Controller
  2. Single phase SCR Module
  3. High Voltage Accessories
  4. 1 hp /single phase ac motor set up
Microcontroller based PWM Controller
Three phase SCR Module
Power Supply for Field
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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
  • 6 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

3Ø SCR POWER MODULE-25A

  • SIX numbers of SCR, Ratings @ 1200V @ 50A, fixed With proper heat sink for cooling and
  • Snubber circuit
  • Two numbers of Diode ( 50A , 1200V) with With proper heat sink for cooling and    Snubber
  • circuit
  • 6 numbers of Pulse amplifier & 1;1 Pulse transformer for all pulse isolation
  • One numbers of 3 Phase 230/9V Supply synchronizing transformer & ZCD Circuit is provided for SCR Pulse generation
  • MCB provided for input power ON/OFF
  • SCR &Diode outputs and AC inputs are terminated in banana connector
  • Specifications- Input- 3 phase 440VAC, Output – 0-600V AC/DC @ 25A

 3Ø AC Motor set up with speed feedback sensor

  • Type             :           3Ø Squirrel Cage Induction Motor
  • Power :           1 hp
  • Voltage             :           415v
  • Speed             :           1415rpm
  • Make             :           CG
  • Feedback sensor                         :           Proximity sensor
  • Loading arrangement             :           Spring balance type loading arrangement with dial indication

Note     :           Full range of speed control is possible only with DC Motor – for AC motor full range of speed control is not possible since it is Voltage control- to achieve full range of speed control we will use V/F technic –it is not possible in the above kit