电磁-机械激励下电动汽车电驱动系统振动特性分析及优化  

Analysis and optimization of vibration characteristics of electric drive system under electromagnetic-mechanical excitation

作　　者：葛帅帅[1] 文一州 张志刚[1] 吴行 谢正邱 GE Shuaishuai;WEN Yizhou;ZHANG Zhigang;WU Xing;XIE Zhengqiu(Key Laboratory of Advanced Manufacturing Technology for Automobile Parts,Ministry of Education,Chongqing University of Technology,Chongqing 400054,China;Chongqing Tsingshan Industrial Co.,Ltd.,Chongqing 402761,China)

机构地区：[1]重庆理工大学汽车零部件先进制造技术教育部重点实验室,重庆400054 [2]重庆青山工业有限责任公司,重庆402761

出　　处：《重庆理工大学学报(自然科学)》2025年第1期1-11,共11页Journal of Chongqing University of Technology:Natural Science

基　　金：国家自然科学基金项目(52005067);重庆市教育委员会科学技术研究计划青年项目(KJQN202301169);重庆理工大学研究生教育质量发展行动计划项目(gzlcx20232024)。

摘　　要：为探究电磁-机械激励下电动汽车电驱动系统振动特性,建立了永磁同步电机有限元模型,研究了电机电磁特性及辅助槽对电机电磁转矩脉动的影响规律;在此基础上,建立了包括电机、传动系统、壳体总成的电驱动系统多柔体动力学模型,分析了电磁激励和机械激励下电驱动系统壳体总成振动特性;研究了定转子开槽结构参数对电驱动系统振动特性的影响,选取定子槽宽、转子槽宽、转子槽间距等敏感参数作为优化变量,构建Kriging响应面模型,对电机辅助槽参数进行多目标优化。研究结果表明,电机24阶、48阶电磁激励对系统振动的贡献较大,优化后振动加速度频域幅值在24f、f z1、48f处分别下降了32.8%、56.6%、57.3%。To investigate the vibration characteristics of electric drive system under electromagnetic-mechanical excitation,we build a finite element model of permanent magnet synchronous motor so that the electromagnetic characteristics of the motor and the influence of auxiliary groove on the electromagnetic torque pulsation of the motor are explored.On this basis,a multi-flexed-body dynamics model of the electric drive system,comprised of the motor,the transmission system,and the shell assembly,is built to analyze the vibration characteristics of the shell assembly of the electric drive system under electromagnetic and mechanical excitation.Vibration characteristics of the shell assembly of the electric drive system under electromagnetic and mechanical excitation are analyzed.Finally,the influence of stator and rotor slotting structure parameters on the vibration characteristics of the electric drive system is investigated.Througha parameter sensitivity analysis,the stator slot width,rotor slot width and rotor slot spacing are selected as the optimization parameters to build the Kriging response surface model,and the multi-objective optimization of the auxiliary slot parameters of the motor is conducted.Our results show the 24th and 48th order electromagnetic excitation of the motor contributes more to the system vibration,and the frequency domain amplitude of the vibration acceleration decreases by 32.8%,56.6%,and 57.3%at 24 f,f z1 and 48 f respectively after optimization.

关 键 词：电动汽车 电驱动系统 振动特性 多目标优化 

分 类 号：U469.72[机械工程—车辆工程]