永磁轮毂电动机定子辅助槽参数优化设计  

Optimization design of stator auxiliary slot parameters of permanent magnet hub motor

作　　者：邹志军 迟长春(指导)[1] 李化影 ZOU Zhijun;CHI Changchun;LI Huaying(School of Electrical Engineering,Shanghai Dianji University,Shanghai 201306,China)

机构地区：[1]上海电机学院电气学院,上海201306

出　　处：《上海电机学院学报》2020年第3期138-143,共6页Journal of Shanghai Dianji University

摘　　要：为了提高电动车用轮毂电动机的效率,基于能量法推导出了齿槽转矩的表达式。对一台电动自行车用54槽48极表贴径向式永磁轮毂电动机,提出了一种降低齿槽转矩的策略。结合响应曲面法和Design-Expert软件,构建二阶多项式回归模型方程,分析方程解得最优定子齿的辅助槽尺寸参数,应用Ansoft有限元软件仿真电动机的齿槽转矩。仿真结果表明:轮毂电动机的齿槽转矩峰峰值有显著降低,从优化前的4.0091N·m下降为优化后的2.1594N·m,降低了46%,验证了策略的有效性,提高了轮毂电动机的可靠性。To improve the efficiency of the hub motor for an electric bicycle,the formula of the cogging torque is derived based on the energy method.A strategy to reduce the cogging torque is proposed for the radial permanent magnet hub motor with 54-slot 48-pole surface mount for an electric bicycle.Based on the response surface method and the Design-Expert software,the secondorder polynomial regression model equation is constructed,and then the equation is analyzed to obtain the auxiliary slot size parameters of the optimal stator teeth.The cogging torque of the motor is simulated by the finite element software Ansoft.The simulation results show that the peak value of the cogging torque of the hub motor decreases significantly,from 4.0091N·m before optimization to 2.1594N·m after optimization,reducing by 46%,which verifies the effectiveness of the strategy and improves the reliability of the hub motor.

关 键 词：轮毂电动机 有限元分析 响应曲面法 参数优化 齿槽转矩削弱 

分 类 号：TM351[电气工程—电机]