Fault analysis and remedial strategy in doubly salient permanent magnet machine drives

The doubly salient permanent magnet (DSPM) machine is a new class of brushless machine having PMs in the stator. In this paper, the fault tolerant performance of DSPM machine drives is studied. To achieve accurate theoretical results, a new co-simulation method based on coupled magnetic and electric circuit solvers is developed to analyze the behavior of the DSPM machine drive with open-circuit faults. In order to enhance the faulty electromagnetic performance, a remedial strategy for the DSPM machine drive with open-circuit faults is proposed. Co-simulation and experimental results are given to verify the high performance of fault tolerant characteristic in DSPM machine drives.