Abstract:The paper deals with out-of-step protection of synchronous motor. Synchronous motor supplied by converter works in wide range of speed, and faces disturbance and acute change of load torque. The out-of step is frequently occurs, and damages the motor, affects on related process. The problem can be solved by adjusting supplied voltage according to the calculated load angle. The load angle can not be measured in working condition. But it can be calculated from stator voltage, current, and power factor which can … Show more
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