摘要：永磁容错电机由于能够提高电力驱动系统的可靠性，因此被广泛用于对安全性要求较高的场合。文章针对永磁容错电机，提出了一种基于检测相绕组的磁链增量，通过利用电机相邻相估算出的转子位置取平均值，得出永磁容错电机转子位置的估计算法，通过这种算法可以较准确的估算出转子位置。最后，利用计算机仿真验证电机在正常、开路故障、低速以及电机参数变化情况下，这种位置估计算法的正确性。

关键词：永磁容错电机；磁链增量；转子位置；估计算法

Abstract: A fault tolerant permanent magnet motor drive is widely used for higher security requirements of the occasion, because it can improve the reliability of the electric drive system.This paper presented fault tolerant algorithms which was based on detecting the incremental flux of the phase winding.By using the adjacent phase for the motor and meaning, the estimated algorithm could obtain the fault tolerant permanent magnet rotor position. Finally, the correctness of the proposed algorithm was verified by computer simulation, under healthy, faulty conditions or motor parameter changing conditions in low and high motor speed.

Key words: fault tolerant permanent magnet AC motor; incremental flux; rotor position; estimated algorithm