Abstract
The increasing usage of theinverter fed three-phase induction motor due to latest technological innovations in the industry demands for designing a high efficiency motor. Three-phase induction motor stator coils were short pitched and tested with pulsewidth modulation (PWM) inverter voltage supply at various switching frequencies. Various loads were varied using eddy current brake and torque is measured using torque gauge. The effect of short pitching on the efficiency of novel winding designed motor were quantified and found that the shortest pitched coil radically improves the efficiency of the motor due to attenuation of lower order harmonics and reduced copper losses.
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