双凸极电机转矩脉动的仿真研究

双凸极电机的凸极结构及其供电电源的开关形式，导致了在输出转矩中存在稳态转矩脉动和换向转矩脉动，由于换向转矩脉动对电机性能影响较大，本文主要对影响电机稳态性能的换向转矩脉动及其产生原因进行了详细的分析研究，在此基础上提出了双凸极电机进行电流控制，改变控制参数，采用双拍工作方式以及改变励磁电流波形等几何方法来改善双凸极电机的输出转矩特性，减小输出转矩脉动。数字仿真结果验证了这些方法对减小转矩脉动的可行性。

Torque-Ripple Simulation of Double Salient Motor

The torque-ripples of the double-salient motor are inevitable for its double salient structure and switch power source. Since the commutation torque ripples are the most important factor which effects the static characteristic of the double-salient motor. This paper studies the cause of the commutation torque ripples. Then several methods for example control parameter adjustment, two phase working method and magnetic current wave adjustment are presented to minimize the torque-ripples. The simulation is carried out and the results demonstrate the validity of decreasing the torque-ripples.