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为了提升五相容错式永磁游标(five-phase fault-tolerant permanent-magnet vernier，FT-PMV)电机的输出转矩和设计优化的效率，该文对影响五相 FT-PMV 电机转矩性能的关键设计参数进行了研究。首先，推导了电机的功率方程，确定了影响电机转矩性能的关键设计参数，并通过解析法计算得到参数的合理取值范围，为电机转矩的优化提供基础。其次，以最大输出转矩为目标，利用遗传算法，对电机的关键设计参数进行了全局优化，设计并制造了一台1.6kW 实验样机。最后，对样机开展了正常运行和故障容错运行的实验研究。仿真和实验结果表明样机确实具有高可靠性、高转矩的优点，同时证明了理论分析的有效性。“,”In order to enhance electromagnetic torque and optimization efficiency of the five-phase fault-tolerant permanent-magnet vernier (FT-PMV) machine, the leading design parameters of the five-phase FT-PMV machine on the electromagnetic torque were investigated. The power equation of the FT-PMV machine was derived for identifying the leading design parameters. By using the analytical method, feasible variation ranges of the leading design parameters were obtained, thus providing a basis for design optimization. In addition, the leading design parameters were optimized by a global optimization with genetic algorithm for maximal torque production. A prototype machine with 1.6kW was fabricated and tested. Finally, experimental studies on the prototype machine were carried out when it operated under both healthy and fault-tolerant conditions. Both the simulated and experimental results reveal that the FT-PMV machine definitely takes the merits of high torque and high reliability. Meanwhile, the effectiveness of the theoretical analysis presented in this paper is validated.