COMPARATIVE ANALYSIS OF THREE-PHASE INDUCTION MOTOR FED FROM BALANCED AND UNBALANCED POWER SUPPLY (original) (raw)

In a three-phase system, unbalance voltage introduce when the magnitudes of phase voltages and the phase angles differ from the balanced conditions, or both. Unbalanced voltage factor have own importance when we are studying the impact of unbalance voltage on the behavior of three-phase induction machines. Problems like over & under voltages, oscillations, high losses and disturbance in phase angle are the key problem of unbalance voltage factor. Searching these abnormal conditions in the machine have major importance in the electrical machine. In this paper the effect of the balance and unbalanced voltages on the motor performance, have been investigated just like rotor and stator current, speed, electromagnetic torque graphs.

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