3 Phase Cyclo Converter Based Speed Control of Synchronous Motor Trainer

SALIENT FEATURES:

• Completely self contained stand alone unit
• Firing Scheme using opamps and gates
• Motor overload protection.
• Positive Bridge and Negative Bridge per phase
• Power Circuit using 24 SCR’s
• 3Φ 0.5HP Synchronous motor with loading arrangement.
• Divide by 2, 3 and 4 Frequency

TECHNICAL SPECIFICATIONS:

• Firing Circuit – Firing scheme using Opamps and gates.
• Power Circuit – Positive Bridge and Negative Bridge per phase. Total of 24 SCR’s
• Protection – i. Fuse protection for all phases
• Controls – i. 3Φ Mains ON / OFF Switch
  ii. Speed Control Potentiometer
  iii. Divide by Frequency Switch
  iv. 3Φ Power Circuit ON / OFF Switch
• Meters – i. Digital Voltmeter for Motor Voltage
  ii. Digital Currentmeter for Motor Current
  iii. Digital RPM Meter for speed of motor
• Indicators – i. 3Φ R, Y, B Indicators
• Connectors – i. 4 way for incoming 3Φ Supply
  ii. 4 way for variable supply from Variac to Power Circuit
  iii. 6 way for Synchronous Motor
  iv. Proximity Sensor

EXPERIMENTS:

1. To study the operation of a firing circuit of a 3 phase Cyclo converter.
2. To study the operation of Speed Control of 3 phase Synchronous Motor for different “ Divide by Frequency” setting.