针对永磁容错轮缘推进电机定子槽数过多、电机质量较大、转矩密度较低的问题，提出一种磁场调制型永磁容错轮缘推进电机结构.采用解析法分析了电机的工作原理，采用单参数扫描法研究了定子关键结构参数对电感和反电动势的影响，采用响应面法和多目标遗传算法对电机进行优化，得到最优的定转子参数.利用有限元仿真软件分析了电机的气隙磁密、反电动势、电磁转矩以及容错性能.结果表明，磁场调制型永磁容错轮缘推进电机具有更高的转矩密度和更强的故障容错能力.

Aiming at the problems of too many stator slots, large machine quality and low torque density of fault-tolerant permanent magnet rim driven machine, a fluxmodulated fault-tolerant permanent magnet rim driven machine was proposed. The operation principle of the machine was investigated by theoretical analysis, and the influence of critical parameters of stator on inductance and back EMF was studied by single parameter scanning. The machine optimization was carried out by response surface method and multiobjective genetic algorithm to obtain the optimal parameters of stator and rotor. The air gap flux density, back EMF, electromagnetic torque and fault tolerance of machine were analyzed by FEA. The results show that the fluxmodulated faulttolerant permanent magnet rim driven machine has higher torque density and stronger fault-tolerant ability.