场路结合法求解永磁同步电动机磁路系数

摘要

Because of using permanent magnet excitation instead of electric excitation , the complexity of PMSM rator magnetic circuit has been increased, this make it difficult to obtain accurate rusults of magnetic factors such as no-load leakage factor, calculate pole arc factor, air gap factor etc by using the equivalent magnetic curcuit method. Proposed using field-circuit combination method to solve the magnetic factor of PMSM. Used equivalent magnetic circuit method to analysis magnetic factor, then substituted the simulation results of Finite Element Analysis into related formula , which defined in equivalent magnetic circuit method. Obtianed more accurate values of magnetic factors, to improve the accuracy of electromagnetic calculation results.%永磁同步电动机由于采用永磁体励磁替代了电励磁，增加了转子磁路的复杂性，使得采用等效磁路法求取空载漏磁系数、计算极弧系数、气隙系数等磁路系数时，难以获得较为准确的结果。提出了运用场路结合法求解永磁同步电动机磁路系数的思路，利用等效磁路法对磁路系数进行理论分析，并将电磁场有限元仿真的结果代入到等效磁路法定义的相关公式中，求得磁路系数较为准确的数值，提高了电磁计算的精度。