永磁式双凸极电机系统稳态运行模型研究

 以一台12/8极永磁式双凸极电机为研究对象,以有限元法对电机内电磁场分析结果为基础,对双凸极电机系统在不同控制方式下的稳态运行过程进行分析,得到与之相应的一阶非线性常微分方程。在Matlab编程环境下对各微分方程进行求解并结合电机的数学模型,建立永磁式双凸极电机系统稳态运行仿真模型,并将仿真得到的电流波形和机械特性曲线与实测得到的相关波形对照,二者间有很好的一致性。表明提出的双凸极电机系统研究方法具有一定的实用价值。

Research on Steady Characteristic Model for Doubly Salient Permanent Magnet Motor

Doubly Salient Permanent Magnet Motor (DSPM) is a novel electromechanical controllable AC variable speed system presented in 1990’s. There are two kinds of control strategies for the motor system. Usually control strategy Ⅰ is adopted on the conditions of lower revolving speed and larger torque. Control strategy Ⅱ is adopted on the conditions of higher revolving speed and smaller torque. In this paper, research on steady characteristic model is carried out for a 12/8 poles DSPM motor system working in the two strategies. And the working status for main circuit can be depicted by a series of one order nonlinear differential equations. By Finite Element Analysis (FEA) method, the field flux and inductance characteristics of a DSPM prototype can be acquainted. On the base of these characteristics and differential equations, a simulation model for computing the steady characteristics of the motor is constructed in Matlab programming environment. A comparison between simulation results and tests is made, and there are good accordance between them.