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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


  1. I just highly interested in learning on slip ring and while surfing on google, I was able to explore this precious post. The speed control details you explained in this post was very knowledgeable and praiseworthy. The effective external resistance and circuit were also very meaningful. I appreciate this kind of contribution and of course love to drop my cordial thanks to you for sharing such wholehearted stuff. Also I would like to embed a site that surely will be appreciated by the users here and here it is Grandslipring

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