路径积分法获取电动汽车用SRM磁链特性应用

发布时间：2018-03-24 23:36

本文选题：开关磁阻电动机　切入点：电磁场有限元分析　出处：《微特电机》2014年12期

【摘要】：针对单元能量扰动法在求取电动汽车(EV)用开关磁阻电动机(SRM)磁链特性时存在计算量大,操作复杂、计算原理不易理解等缺点。在建立SRM二维有限元模型的基础上,对SRM在不同相电流和转子角度下的电磁场分布进行了有限元分析计算,根据SRM工作时电磁场分布特点,提出了一种基于预定义路径的线积分来求取SRM磁链特性的方法。得到了SRM磁链特性,并与单元能量扰动法求取磁链特性进行了比较,结果表明,采用路径积分法求取SRM磁链特性原理简单,操作方便,计算量小,结果准确可靠。最后通过与实测法得到的SRM磁链特性比较表明,由路径积分法得到的SRM磁链特性结果较准确地反映了SRM内部电磁关系,可以作为SRM非线性建模和各种分析优化的基础。
[Abstract]:In order to solve the shortcomings of element energy perturbation method in calculating the flux characteristics of switched reluctance motor (SRM) used in electric vehicles (EV), such as the complexity of calculation, the complexity of operation and the difficulty of understanding the calculation principle, etc., based on the establishment of a two-dimensional finite element model of SRM, the finite element method is presented. The electromagnetic field distribution of SRM under different phase current and rotor angle is calculated by finite element method. According to the characteristics of electromagnetic field distribution during SRM operation, In this paper, a method based on the line integral of predefined path to obtain the SRM flux characteristics is proposed. The SRM flux characteristics are obtained and compared with the element energy perturbation method. The results show that, The method of path integration is used to calculate the characteristic of SRM flux. The principle is simple, the operation is convenient, the calculation is small, and the result is accurate and reliable. The results of the SRM flux characteristics obtained by the path integration method can accurately reflect the electromagnetic relationship within the SRM and can be used as the basis for nonlinear modeling and various analysis and optimization of SRM.
【作者单位】：中北大学;内蒙古第一机械集团有限公司;
【分类号】：TM352

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