双定子永磁同步电机空载漏磁系数计算与研究

Calculation and Research on No-Load Flux Leakage Coefficient of Double-Stator Permanent Magnet Motor

针对双定子永磁同步电机的特殊电机结构空载漏磁系数的求解,文章以一台3.5 MW的双定子永磁电机为例,建立了分析模型,并通过仿真分析确认了模式磁路设计的合理性。使用有限元法求出电机磁矢位值,将双定子电机一分为二计算出内外两个空载漏磁系数。在电机其他参数一定的情况下以气隙长度和永磁体厚度为变量,求出这两个参数对电机空载漏磁系数的影响。

In order to solve the no-load flux leakage coefficient of double-stator permanent magnet synchronous motor,this paper takes a 3.5 MW double-stator permanent magnet motor as an example to establish an analysis model,and confirms the rationality of mode magnetic circuit design through simulation analysis.Then the magnetic vector position of the motor is calculated by using the finite element method,and the two no-load magnetic leakage coefficients of the double-stator motor are calculated by dividing it into two parts.The influence of the two parameters on the no-load flux leakage coefficient of the motor is calculated by taking the length of air gap and the thickness of permanent magnet as variables under the condition that the other parameters of the motor are constant.