开关磁阻电机非线性径向电磁力解析建模  

Analytical Modeling of Nonlinear Radial Electromagnetic Force in Switched Reluctance Motors

作　　者：胡胜龙 左曙光[1] 刘明田 Hu Shenglong;Zuo Shuguang;Liu Mingtian(School of Automotive Studies Tongji University,Shanghai 201804 China)

机构地区：[1]同济大学汽车学院,上海201804

出　　处：《电工技术学报》2020年第6期1189-1197,共9页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51875410)。

摘　　要：针对开关磁阻电机径向电磁力严重的非线性问题,首先采用基于磁动势乘以磁导的解析法并结合铁心材料特性曲线,来预测开关磁阻电机的饱和磁场,然后运用麦克斯韦应力方程求解得到非线性的径向电磁力。该解析法可用于求解任意极对数的开关磁阻电机在任意转子位置下的径向电磁力。结果表明,解析结果与有限元结果整体吻合较好,进一步验证了该方法的有效性,从而为开关磁阻电机的振动噪声预测与优化研究奠定基础。This paper aims at accurately predicting the nonlinear radial electromagnetic force in switched reluctance motors(SRMs).First,the saturated magnetic field of a SRM was predicted by the analytical method based on the magnetomotive force multiplying the permeance and the characteristic curve of the core material.Then,the nonlinear radial electromagnetic force was obtained by solving the Maxwell stress equation.The proposed analytical method can predict the radial electromagnetic force in SRMs with an arbitrary number of stator poles and rotor poles at an arbitrary rotor position.The results show that the radial electromagnetic force obtained by the analytical method is in good agreement with that of the finite element method,which further verifies proposed method.It lays the foundation for the vibroacoustic prediction and optimization of SRMs.

关 键 词：开关磁阻电机 磁饱和 径向电磁力 解析法 

分 类 号：TM352[电气工程—电机]