Abstract - Aschere for sensorless reasurement of rotor speed and slipusing rotor slot haroonics of a three phase squirrelcage. Induction motor i s proposed in this paper. The scheme is.Irplerentedusing aicrocontroller 80C196 to develop an 'ELECTRONIC TACHOIIETER' and is based on 8 novel technique of.Extractingrotorslot harAonics fror the various voltage.Ripples induced in the stator windings. The paper also.Discusses the various schemes to process the rotorslot.Harmonic signal to obtai r OT or speed and slip information.Experiuental result s are presented.
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