摘要
为了降低电动车电磁噪声,以电动车用永磁同步电机为研究对象,建立了有限元参数化模型,计算径向力波。通过解析法和试验,验证了有限元参数化模型的正确性。应用该模型,以永磁体厚度、气隙长度、定子槽中心宽度、定子槽开口宽度4种结构因素为设计变量,以1阶、2阶、3阶径向力波能量和径向力波均值最小为目标函数,进行了影响径向力波的结构因素灵敏度分析。结合电机设计要求,提出了改变气隙长度和定子槽中心宽度的参数优化方案,有限元计算结果显示优化方案改善了径向力波。
In order to reduce electromagnetic noise of the electric vehicle and calculate electromagnetic radial force,a finite element parametric model is built up based on permanent magnet synchronous motor in the electric vehicle.By means of analytical method and experimental method,the model proves to be right.Based on the model,sensitivity analysis for structural determinants that can effect electromagnetic radial force is carried out,which takes the thickness of permanent magnet,the length of air gap,the width of stator slot center and the width of stator slot shedding as variables and minimum first order,second order,third order radial force energy and mean value of radial force as target function.Combined with the design requirements of motor,optimization scheme is proposed,in which the length of air gap and the width of stator slot center are as parameter optimization.According to the finite element computing result,the optimization scheme improves the radial force.
出处
《振动．测试与诊断》
EI
CSCD
北大核心
2013年第3期357-363,521,共7页
Journal of Vibration,Measurement & Diagnosis
基金
国家基础研究发展计划(“九七三”计划)资助项目(2011CB711201)
国家自然科学基金资助项目(51075302)
关键词
电动车
永磁同步电机
径向力波
灵敏度分析
优化
electric vehicle,permanent magnet synchronous motor,radial force,sensitivity analysis,optimization
