开关磁阻电机定子系统磁固耦合解析建模分析

建立了开关磁阻电机定子系统磁固耦合振动微分方程;在考虑开关磁阻电机位移场与电磁场相互作用、相互影响的条件下,利用麦克斯韦张量法和磁路法,推导出开关磁阻电机定子系统所受径向电磁力;结合梁函数组合法解得定子系统径向振动位移表达式。以一台8/6样机为例,将所求结果与二维有限元分析结果进行了对比,验证了所建模型的有效性,所建模型符合实际开关磁阻电机结构及运行特点。

Analytical modeling and analysis for the stator system of switched reluctancemotors considering coupled magnetism and solid dynamic characteristics

This paper investigates the magnetism and soldid coupling dynamic equation of the statorsystem;The main exciting force of the vibration is electromagnetic force in the stator that is calculatedusing the Maxwell tensor and the magnetic method in consideration of the radial vibration displacementswith the magnetic field in air gap coupling of the stator core;By means of the combinationmethod of beam function,the analytic expressions formula of the radial vibration displacements of statorcore is derived.The model conforms to the actual switched reluctance motor structure and operationcharacteristics.This paper provides theory basis of switched reluctance motor for structure optimizationdesign and prediction and control of electromagnetic vibration and noise.With a model of 8/6switched reluctance motor as an example,this paper verify the correctness of the analytical modelscomparing its results with the one obtained using the finite element method.