三相永磁容错电机单相故障的容错控制

为了使三相永磁容错电机在单相故障后仍能输出满足要求的转矩,提出了容错电流优化控制方法。针对开路故障,利用故障前后磁动势不变的原则,得到了故障时的容错补偿电流,实现对转矩脉动的补偿。针对短路故障,利用分开补偿的策略,对由短路电流引起的转矩脉动和缺相不对称转矩脉动进行分开补偿,进行了电流矢量合成,实现了电机在短路时输出转矩脉动的最小化。通过MATLAB/Simulink进行仿真,验证了所提出容错控制方法的有效性。

FaultTolerant Control for ThreePhase Permanent MagnetFaultTolerant Motor Under Single Phase Fault Condition

In order to make the threephase permanent magnet faulttolerant motor still meet the requirements of the torque output after singlephase fault, a faulttolerant current optimization control method was proposed. For the opencircuit fault, based on the unchangeable principle of magnetic motive force, the faulttolerant compensation current was obtained, and the compensation of the torque ripple was achieved. For the shortcircuit fault, the torque ripple caused by short circuit current and the phase missing asymmetrical torque ripple were separately compensated by the strategy of separate compensation, and then the current vector synthesis was carried out to realize the minimization of the output torque ripple when the motor was short. The simulation experiment of MATLAB/Simulink was used to verify the effectiveness of faulttolerant control method.