电动汽车用混合励磁电机交流励磁对振动特性的影响  

Effects of excitation current on vibration characteristics of a hybrid excitation motor for electric vehicles

作　　者：樊英[1,2] 邬占川 高大威 谭超[1] FAN Ying;WU Zhanchuan;GAO Dawei;TAN Chao(School of Electrical Engineering, Southeast University, Nanjing, 210096, China;State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China)

机构地区：[1]东南大学电气工程学院,中国南京210096 [2]汽车安全与节能国家重点实验室,清华大学,中国北京100084

出　　处：《汽车安全与节能学报》2018年第4期469-476,共8页Journal of Automotive Safety and Energy

基　　金：汽车安全与节能国家重点实验室开放基金(KF1823)

摘　　要：为了研究交流励磁电流对混合励磁电机电磁力与振动等特性的影响,以一台转子交替极双定子混合励磁电机为对象,利用二维有限元法对不同励磁条件下电机内的磁通分布及气隙磁密进行计算;基于Maxwell应力张量法计算作用在电机外定子上的径向电磁力,通过二维快速Fourier变换(2DFFT)对径向电磁力波的时间和空间分布进行分解;建立该电机的磁固耦合模型,采用模态叠加法计算出不同励磁条件下电机的振动特性。结果表明:励磁电流相位角对电机电磁力谐波幅值和振动峰值具有重要影响,且弱磁控制时振动在一定程度得到削弱。本研究结果对混合励磁电机的优化和振动抑制有参考价值。A dual-stator hybrid excitation permanent magnet(DSHEPM)motor with consequent-pole rotor structure was used to investigate the effects of AC excitation current on the electromagnetic force and vibration characteristics of the hybrid excitation motor.The magnetic flux distribution and air-gap magnetic density under different excitation conditions were analyzed by2-dimensional finite element method.The Maxwell stress tensor method was employed to calculate the radial electromagnetic force.The electromagnetic force was decomposed using the2-dimensional Fourier transformation(2DFFT)method.The vibration characteristic of the DSHEPM motor was analyzed by the mode superposition method based on multi-physics model.The results show that the phase angle of the excitation current has a significant impact on the electromagnetic force harmonics and the electromagnetic vibration can be decreased through the flux-weakening control.The research will contribute to the vibration suppression and optimization of the DSHEPM motor.

关 键 词：混合励磁 永磁电机 振动 励磁电流 磁场调节 

分 类 号：U469.72[机械工程—车辆工程] TM331[交通运输工程—载运工具运用工程]