基于参数敏感度的双转子轮毂电动机优化设计与特性分析  

Optimization design and performance analysis of dual-rotor in-wheel motor based on parameter sensitivity

作　　者：李军民 何仁[1] LI Junmin;HE Ren(School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China;School of Mechanical Engineering, Anyang Institute of Technology, Anyang, Henan 455000, China)

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013 [2]安阳工学院机械工程学院,河南安阳455000

出　　处：《江苏大学学报（自然科学版）》2020年第6期640-647,共8页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51875258)。

摘　　要：为了克服现有2种类型轮毂电动机在电动汽车实际应用中存在的缺点,提出了一种基于双转子电动机的电动轮集成结构,可实现内外电动机单独驱动、共同驱动、再生制动和复合制动等多种工作模式,从而满足电动汽车多工况运行需求.针对双转子轮毂电动机的复杂结构,建立了其参数化模型,以电动机平均输出转矩和转矩脉动为优化目标,采用参数敏感度分析和响应面法相结合,筛选出了对电动机优化目标影响最大的关键结构尺寸参数,并确定其最优值;通过有限元分析对电动机的空载磁力线分布、反电动势、输出转矩等性能进行了验证.结果表明:参数优化后,这些性能均得到了明显改善;采用分段斜极对双转子轮毂电动机的转子结构进行改进,有效降低了电动机的齿槽转矩,进一步改善了电动机的运行可靠性.To overcome the shortcomings of two kinds of in-wheel motors existing in the practical application of electric vehicles,an integrated electric wheel structure was proposed based on dual-rotor motor.Multiple working modes of single drive for internal and external motor,coupling drive,regenerative braking and composite braking could be realized to meet the requirements of electric vehicles under multiple operating conditions.Aiming at the complex structure of the dual-rotor in-wheel motor,a parametric motor model was established.With average output torque and torque ripple as optimization goal,the key structural size parameters with the greatest impact on motor optimization targets were selected,and the optimal values were determined based on the combination of parameter sensitivity and response surface methodology.The electromagnetic properties of no-load magnetic field distribution,back EMF and output torque of the motor were verified by the finite element analysis.The results show that the properties are significantly improved after the parameter optimization.The segmented oblique pole can optimize the rotor structure of the dual-rotor in-wheel motor,which effectively reduces the cogging torque and further improves the operational reliability.

关 键 词：双转子轮毂电动机 参数敏感度 响应面法 转子分段斜极 电磁性能 

分 类 号：U469.72[机械工程—车辆工程]