车用驱动电机扁线绕组关键问题研究综述  

Overview of Key Issues of Flat Wire Winding of Traction Motor for Electric Vehicles

作　　者：鞠孝伟 张凤阁 程远[2] 刘光伟 崔淑梅[2] JU Xiaowei;ZHANG Fengge;CHENG Yuan;LIU Guangwei;CUI Shumei(Key Laboratory of Special Electric Machines and High Voltage Apparatus of Ministry of Education(Shenyang University of Technology),Shenyang 110870,Liaoning Province,China;School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,Heilongjiang Province,China)

机构地区：[1]特种电机与高压电器教育部重点实验室(沈阳工业大学),辽宁省沈阳市110870 [2]哈尔滨工业大学电气工程及自动化学院,黑龙江省哈尔滨市150001

出　　处：《中国电机工程学报》2024年第15期6181-6198,I0029,共19页Proceedings of the CSEE

基　　金：国家自然科学基金重点国际合作研究项目(51920105011);辽宁省自然科学基金项目(2021-YQ-09)。

摘　　要：扁线绕组具有槽满率高、导热性能好和振动噪声低等优点,目前已成为电动汽车驱动电机主流绕组形式之一。然而,随着电动汽车用电驱动系统高频高压化发展,扁线绕组也面临诸多挑战。该文从扁线绕组结构、交流损耗、热和冷却、绝缘和制造工艺等方面,综述电动汽车驱动电机扁线绕组的国内外研究现状。首先,介绍现有扁线绕组拓扑结构及其设计原则,阐明扁线绕组交流损耗产生机理,在此基础上,综述交流损耗计算模型和抑制方法;其次,给出扁线绕组电机的热分布特点,并对不同冷却方案进行对比;然后,基于扁线绕组绝缘问题的研究现状,提出考虑电热应力耦合作用下的扁线绕组高可靠设计方法;最后,结合绕组3D打印制造工艺研究现状,对下一代扁线绕组制造技术进行展望,并指出未来发展方向。Flat wire winding has emerged as a leading winding form for traction motors in electric vehicles(EVs)owing to its advantages such as high slot fill factor,good heat transfer performance,and low vibration and noise.However,as electric drive systems progress towards higher frequencies and voltages,flat wire winding encounters many challenges.This paper summarizes the status of flat wire winding from the aspects of structure,AC loss,thermal management,cooling,insulation and manufacturing technology.First,the topology and design principle are introduced,the mechanisms of AC loss are expounded,and the calculation model and suppression method are summarized.Subsequently,the heat distribution of flat wire winding motor is given,and different cooling schemes are compared.Furthermore,based on the research status of insulation problem,a high reliability design method for flat wire winding considering the effect of thermal and voltage stress coupling is proposed.Finally,the next generation of flat wire winding manufacturing technology including the potential integration of 3D printing is prospected,and concluded by outlining future development trends of flat wire winding.

关 键 词：扁线绕组 交流损耗 冷却设计 绕组绝缘 3D打印 发展趋势 

分 类 号：U469[机械工程—车辆工程]