磁固耦合效应下集成式永磁电动轮定子振动响应与结构优化研究  

Vibration response and structural optimization for the stator of integrated permanent magnet in-wheel motor under magnetism and solid coupling effect

作　　者：李瑞 王强 林棻[3] 梁奎 赵子亮 LI Rui;WANG Qiang;LIN Fen;LIANG Kui;ZHAO Ziliang(College of Transportation,Shandong University of Science and Technology,Qingdao 266590,China;College of Energy and Power Engineering,Zhongtong Bus Holding Co.,Ltd.,Liaocheng 252000,China;College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]山东科技大学交通学院,山东青岛266590 [2]中通客车股份有限公司,山东聊城252000 [3]南京航空航天大学能源与动力学院,南京210016

出　　处：《重庆理工大学学报（自然科学）》2022年第9期15-24,共10页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金项目(52002229);中国博士后科学基金项目(2022M713655);山东科技大学人才引进科研启动基金项目(2017RCJJ053)。

摘　　要：针对磁固耦合效应下集成式永磁电动轮定子振动问题,依据改进的子域模型理论和有限元分析方法,建立考虑定子齿尖效应的磁场预测模型。首先,根据Maxwell应力张量方程,明确不平衡电磁力时空分布及幅频特性;其次,基于薄壳理论,将定子总成等效为弹性圆柱薄壳,建立考虑激振力变化的磁固耦合动力学模型,给出电动轮关键构件模态频率及振型;在此基础上,以降低定子耦合振动为优化目标,采用提出的自适应权重粒子群优化算法对定子结构参数进行设计。对比分析表明,结构优化后,定子磁固耦合振动得到了有效改善,提高了永磁电动轮运行的稳健性。Aiming at the magnetism-solid coupling vibration of the integrated permanent magnet in-wheel motor stator, a magnetic field prediction model considering the tooth-tip effect is established using the improved subdomain theory and finite element analysis method. Firstly, through the Maxwell’s stress tensor equation, the spatial-temporal distribution and the amplitude frequency characteristics of unbalanced electromagnetic force is determined. Furthermore, according to the thin shell theory, the stator assembly is equivalent to an elastic thin cylindrical shell. And the magnetism-solid coupling dynamic model considering different exciting forces is established, the mode frequency and shape for the key components of in-wheel motor are revealed. On this basis, taking the reduction of coupling vibration as the optimization target, the optimization design of the stator structural parameters is carried out by using the adaptive weighted particle swarm optimization algorithm. The comparative analysis shows that the structural optimization can effectively reduce the magnetism-solid coupling vibration of the statorand exhibit excellent performance in terms of the in-wheel motor operational stability.

关 键 词：集成式永磁电动轮 磁固耦合 自适应权重的粒子群算法 结构优化 

分 类 号：U461.1[机械工程—车辆工程]