AC Drive Trainer ( 3 f PWM Based )

SALIENT FEATURES :

AC Drive Demonstration Unit is a versatile stand alone unit useful in the study & demonstration of the principle & working of an AC drive. The circuit works on the principle of PWM with frequency & voltage control. A Three phase 1HP AC motor coupled with a Speed Measurement & loading arrangement is also provided. A 3 pin mains socket for connecting the CRO is also provided for isolation. It is housed in an elegant metal cabinet with a well spread intelligently designed circuit layout on front panel. Multi – coloured test points are provided at various stages in the circuit to observe voltages & waveforms.

TECHNICAL SPECIFICATIONS:

• Input : 415V, 50Hz A.C 3?.
• Output : Variable AC ( 0 to 400V. )
• Output Frequency : Approx. 1Hz to 50 Hz.
• Circuitry : PWM based circuitry with voltage & frequency control.
• Power Circuit : Using IGBT.
• V / F Ratio : Constant.
• Load : 1HP, 3? AC motor with Speed Sensor coupled to it & loading arrangement.
• Controls : 1. Frequency Control.
  2. Voltage Control.
  3. START / STOP Switch.
  4. Fault Reset Switch.
• Indicator : 1. Mains ON.
  2. Run.
  3. Fault.
• Socket : 1. 8 pin socket for connecting motor & Speed Sensor.
  2. 3 pin socket for CRO.
• Display : 1. 3 ? digit to indicate AC voltage.
  2. 3 ? digit to indicate speed in RPM.
• Motor : 1 HP AC motor 3? 440V, 50Hz with Speed Sensor & loading arrangement.
• Panel Size : 410 mm x 320 mm

Experiments :

1. Study the PWM firing circuit of an AC drive.
2. Speed control of AC motor.