永磁电机分析的场路耦合时步有限元法

摘要

在建立了永磁同步电机的完整场路耦合模型的基础上,采用时步有限元的方法来分析永磁同步电机.运用气隙边界运动法来模拟转子的运动,再结合转子的机械运动方程,从而可求得永磁同步电机的暂态过程和运行特性,给出了计算和求解的过程.通过对一台永磁同步电机的有限元仿真,验证了模型的合理性,为永磁同步电机的分析和优化设计提供了借鉴.%The permanent magnet motor with the time-stepping finite-element method based on the establishment of the complete circuit-field coupled model was analyzed. A moving air-gap boundary method was adopted to simulate the movement of rotor. Combined with the rotor mechanical motion equation,the PMSM transient process and operation characteristics could be solved and the process of calculating had been given. It verified the rationality of the model through the finite element simulation of a PMSM,providing some reference for the analysis and optimization design of PMSM.