摘  要：对于安全要求高的电力驱动系统，其电机应具有容错性能，即故障存在的情况下系统仍能正常工作。文章对采用了冗余设计的双余度永磁容错电机进行研究，提出了一种基于电流控制的开路故障补救策略。补救策略旨在当电机发生一相或多相开路故障时，能够产生同正常运行时相同的输出转矩，同时产生最小的转矩脉动和铜耗。经仿真证实，该故障补救策略可以完成预定的功能。
关键词：永磁电机；容错；开路故障；补救策略

Abstract: The motor drive should be fault tolerant in a safety critical electric drive system. When some faults occur in the system, they can continue performing designed function. In this paper, a dual fault tolerant permanent magnet motor with redundancy was investigated,and a fault remedial strategy in the condition of open circuit fault was proposed. The strategy aims to provide the same output torque as it normally does, with minimum torque ripples and copper loss, when one phase or more than one phase open circuit fault occurs. The simulation results show that the proposed fault remedial strategy can perform the expected function.
Key words: permanent magnet motor;fault tolerant;open circuit fault;remedial strategy