16 March 2017

Speed Control of Slip Ring Induction Motor By Chopper

Effective external resistance =
           R1 ( TON ) + ( R1 + R2 )( TON + TOFF ) / ( TON + TOFF )
  • The speed of the slipring induction motor depends upon rotor resistance. 
  • The high speed operation of motor is obtained by low rotor resistance and vice versa. 
  • The speed of the motor can be changed by ON – OFF control of chopper. 
  • The transistor is used as switching device for low power, GTO for medium power and SCR for high power requirement in the chopper circuit.

speed control of slip ring induction motor by chopper

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