摘  要：针对应用于车辆自重较大场合的低速大转矩永磁轮毂电机，给出了转子磁极结构、电枢绕组形式以及极槽配合的选用原则，采用分数槽集中绕组结构可以削弱谐波电动势的影响，提高端部空间利用率和降低齿槽转矩。设计一台12槽10极内置径向式永磁同步轮毂电机，采用有限元法对漏磁、气隙以及极弧系数等影响因素进行研究，以提高电机的输出性能。对样机进行了计算和实验测试，计算结果与实验结果相符，表明了设计分析的正确性。
关键词：永磁轮毂电机；集中绕组；低速大转矩；空载反电势；漏磁系数

Abstract: The selection principles of rotor pole structure,armature winding,slotpole combination of permanent magnet in-wheel motor with low speed and high torque being applied to high self-weight occasion’s vehicle were given.Fractional slot concentrated winding was adopted to reduce the influence of harmonic electromotive force,meanwhile to increase the winding’s end space utilization and reduce the cogging torque.Designed an interior permanent magnet in-wheel motor with 12-slot and 10-pole.Studied the influences of no-load flux leakage,pole-arc coefficient and air gap length by finite element method in order to improve the motor’s output performance.The simulation and the experiment of prototype are performed,the calculation result and the experiment result are in agreement and the correctness of the design analysis is validated.
Key Words: Permanent magnet in-wheel motor;Concentrated winding;Low speed and high torque;No-load back EMF;Leakage coefficient