V Instruments

Static Kramer Drive

Static Kramer Drive
STATIC KRAMER DRIVE
STATIC KRAMER DRIVE_!
single phase loading rheostat-3kw
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DETAILED SPECIFICATION

1 HP Slip ring Induction Motor with spring balance load set up

Specification

  • Type 3 Phase Slip ring induction motor
  • Power 1 hp ( 750W)
  • Stator Voltage 3 phase , 415VAC
  • Rotor Voltage 3 phase , 200VAC
  • Speed 1500 RPM
  • Loading Spring balance type loading with dial indication for load measurement in Kg.
  • Sensor Speed sensor for motor RPM Indication

Rotor side converter

This diode based 3 phase converter is used to convert slip ring induction motor – rotor side 3 phase ac supply to dc voltage. This dc voltage is fed in to SCR converter section it consists of

  • One number of  3phase diode full bridge rectifier is provided as rotor side converter
  • 1200V , 60A Capacity
  • With necessary heat sink & fuse protection.

SCR Converter power circuit with dspic based Firing angle controller

This 3 phase SCR converter power module  can be used for Static Kramer drive system by   external PWM controller interfacing from dspic based firing angle controller (180-90 degree)

  • SCR based 3 phase Fully Controlled bridge power circuit
  • Six numbers of SCR, Ratings @ 1200V @ 50A, fixed With proper heat sink for cooling and Snubber circuit
  • Two numbers of Diode ( 35A , 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 415/9V 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 0-415VAC, Output – 0-600V DC @ 25A .

Microcontroller based PWM Controller

This PWM controller is designed based on Dspic30f4011 controller chip specially designed for Power Electronics & Motor control applications 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.
  • RS232 Connection with MAX232
  • Internal EEPROM.
  • Five 16-bit Timers
  • Power, Programming and Test LED’s
  • 2MB PROM & 24 Mhz clock speed.
  • USB – PGM Down loader.
  • 6 Numbers of ADC input.
  • QEP Sensor /Hall sensor/Speed sensor(Proximity)Interface.
  • PWM increment & decrement key.
  • Reset switch & LED’s for Sensor status.
  • 20 X 4 LCD screen.
  • PWM outputs are terminated by 34 pin FRC Connector

Power inductor with 3phase transformer

  • One number of Power Inductor is provided as dc link inductor.
  • 100m H , with different toppings
  • 10A Capacity
  • Iron core -50HZ operation
  • One number of 3 phase transformer is provided supply feed back transformer
  • Specification
      • Input              3 phase 230-230-230VAC
      • Output                        3Phase 110-110-110VAC
      • Power             2 KVA

Accessories

  • One number of three phase Autotransformer  – 2KVA is provided for feedback transformer input.

Digital Meter set up

  • Digital Wattmeter is provided for SRIM Stator , rotor & supply side power measurement
  • Digital Ammeter is provided for dc side current measurement.