中文摘要：

为满足电机驱动系统在多种高可靠性领域的应用，提出一种新型的定子永磁式容错电机结构——双凸极容错（doubly salient fault tolerant，DSFF）电机。DSFT电机在结构上集中了开关磁阻电机和转子永磁式容错电机的特点，具有结构简单、可靠性高、功率密度高等优点。以一台四相8／10极DSFT电机为例，分析其结构特点、容错齿作用和运行原理。在此基础上，研究DSFT电机在正常和短路时的磁场特性，计算磁链、自感、互感等电磁特性，从理论上分析DSFT电机的容错性能。运用电路、磁路瞬态联合仿真的方法，建立DSFT电机驱动系统的场路耦合分析模型，分别对电机在正常和缺相运行状态下的转矩输出性能进行计算分析。研究结果表明，DSFT电机相与相间的独立性好，具有较强的带故障运行能力，适用于一些工作环境恶劣且要求高可靠性、高能量密度的场合。

英文摘要：

A novel fault tolerant machine with permanent magnets （PMs） in the stator, termed as doubly salient fault tolerant （DSFT） machine, was proposed for applications where fault tolerance was key requirement. DSFT machines incorporate the merits of both switched reluctance and rotor-PM fault tolerant machines, offering the advantages of simple structure, high reliability and high power density. A four-phase 8/10-pole DSFT machine was presented, and its topology characteristic, fault-tolerant-teeth structure and operating principle were analyzed. Electromagnetic performance of the proposed machine was carried out, such as flux-linkage, selfand mutual-inductance. A co-simulation model of a DSFT motor drive was developed, using coupled magnetic and electrical circuit solvers. The co-simulation model was used to predict torque performance of DSFT motor drive under various conditions. The results show the high degree independence of phases and the high performance of fault tolerant characteristic in DSFT motor drives. A DSFT machine is a vital candidate in many applications where the reliability and power density are of importance.