双三相感应电动机故障状况下有限元仿真

Finite-Element Simulation of Double Three-Phase Induction Motors at Fault Condition

双三相感应电动机在电动机气隙磁动势不变的基础上,保持多相电机每相激磁电流幅值相等。但当双三相感应电动机出现故障时,基波磁动势由圆形变为椭圆形的旋转磁动势,导致六相电动机不能正常运行。对双三相感应电动机各种故障状况进行有限元仿真分析,找出可容错运行的工况。

The double three-phase induction motor can keep the equal amplitude of excitation current each phase based on the invariable air-gap magnetomotive force.However,when the failure of double three-phase induction motor happens,the magnetomotive force of fundamental wave changes from roundness to oval rotation,which results in abnormal operation of the six-phase motor.In this paper,the various fault conditions of double three-phase induction motor are analyzed by finite-element simulation so as to find out the fault-tolerant operating condition.