电动车用永磁同步电机转子偏心对电磁力影响分析  

The Analysis of Electromagnetic Force in Permanent Magnet Synchronous Motors with Rotor Eccentricity in Electric Vehicles

作　　者：左曙光[1] 高丽华[1] 吴旭东[1] 马琮淦[1] 沈健[1] 

机构地区：[1]同济大学新能源汽车工程中心,上海201804

出　　处：《佳木斯大学学报（自然科学版）》2014年第2期166-170,175,共6页Journal of Jiamusi University：Natural Science Edition

基　　金：国家重点基础研究发展计划973项目(2011CB711201);国家自然科学基金项目(51375343);重大科研仪器设备专项(2012YQ150256)

摘　　要：针对电动车用永磁同步电机转子偏心问题,对偏心对电磁力的影响进行研究.通过解析法和有限元法建立电机偏心电磁力以及不平衡磁拉力模型,分析静动态偏心对电磁力的影响,得出静动态偏心会增加±1阶电磁力成分,并分别产生0Hz和f/p的不平衡磁拉力,且不平衡磁拉力成分随偏心率呈线性变化.这就为分析电动车用电机的振动和噪声激励源奠定了基础.In this paper , the effect of eccentricity on the electromagnetic force was studied considering permanent magnet synchronous motor （ PMSM ） with rotor eccentricity in electric vehicles .The electromagnetic force and unbalanced magnetic pull （ UMP） model was established by analytical and finite element method , and the influence of static and dynamic eccentricity on electromagnetic force was analyzed .It is concluded that the eccentricity increases ±1 spatial harmonic order of electromagnetic force , and the 0Hz and f/p frequency of UMP, and the UMP changes linearly with rotor eccentricity , which is the basis for analyzing the excitation of noise and vibration in electric vehicles .

关 键 词：永磁同步电机 转子偏心 电磁力波 不平衡磁拉力 

分 类 号：TM341[电气工程—电机] TM351