简易的开关磁阻电动机系统仿真算法研究

Research on a Simple Simulation Method of the Switched Reluctance Motor

为了简化开关磁阻电机的数值分析,缩短其研制周期,提出一种仿真算法来代替原来比较复杂的三维有限元计算过程。根据开关磁阻电机的结构特点与运行原理,将其分成铁心中部与端部两个部分,铁心中部采用计算精度较高的非线性二维场-路耦合的方式,计算其瞬态磁场分布及其电感,铁心端部采用线性磁路算法计算其端部电感,然后合成为总的计算模型计算出开关磁阻电机的转矩。利用实验模型验证了该算法的有效性,误差在合理范围内,可以作为开关磁阻电机研制阶段的一种仿真分析手段来使用。

In order to simplify the numerical analysis procedure of a switched reluctance motor and to accelerate it＇s re- searching cycle, a new simulation method was proposed replacing the complicated 3-D finite element model computation. According to structure characteristics and running principle of the switched reluctance motor, it can be divided into two parts that are core middle part and core end part. To the core middle part, a method of non linear instant 2-D field was adopted and was coupled by circuit with high calculation accuracy. To the core end part, the linear magnetic circuit method was adopted to calculate the end-part inductance. Then combining these two parts together, the torque of the switched reluctance motor was calculated. In order to testify this simulation method, a experimental model was designed to measure the torque. The deviation of this simulation method is in the rational region, and it can be used to the switched reluctance motor developing stage.