旋转电机绕组磁链的三维有限元分析

针对非正弦电压供电的旋转电机稳态或动态性能仿真,提出了一种基于三维有限元分析和网格重构的绕组磁链和端部漏电感的计算方法,根据所提出的方法,计算了一种三相12/8极开关磁阻电机的绕组端部磁链,并给出了端部漏电感随转子位置和邻近绕组电流变化的曲线族。该计算方法也可用于旋转电机或其它电磁装置的三维磁链计算。具体算例说明了考虑端部漏磁场效应的条件和必要性。

Three Dimensional Finite Element Analysis of Winding Magnetic Flux Linkage in Rotary Electric Machines

A method is presented which is used to calculate the magnetic linkage of winding and its end-part leakage inductance in rotary electric machines with nonsinusoidal excitations based on 3D finite element analysis and mesh re-construction. The magnetic linkages of winding end part for a switched reluctance motor with 3-phase, 12/8 poles are computed, and the numerical results of inductances of winding end part versus the rotor positions and the electric currents of the adjacent windings are given. The method could be also used for the 3D magnetic linkage calculation of common rotary electric machines and other electromagnetic devices. The computation examples show the condition and necessity of considering the effect of magnetic fields in winding end parts.