Keep the stator flux maximum

Maintain the rotor current minimum

Maintain the speed of motor constant

Maintain the rated torque at all speeds

Cyclo converters

Frequency multiplier

Phase sequence indicator

Servo controlled voltage stabilizer

Opto coupler

Speed sensing

Photo voltaic cell

Resistance temperature detector

Rolling machine

Air Compressor

Shearing machine

Heavy duty electric drilling machine

Slip controller

Rectifier controller

AC voltage controller

DC chopper controller