基于正弦波驱动的DSM转矩脉动分析与抑制  

Torque Ripple Analysis and Suppression of DSM Based on Sine-wave Drive

作　　者：章安璃 王勤[1] 胡吟风 田清钰 ZHANG An-li;WANG Qin;HU Yin-feng;TIAN Qing-yu(Nanjing University of Aeronautics and Astronautics,Nanjing211106,China;不详)

机构地区：[1]南京航空航天大学,自动化学院,江苏南京211106 [2]东南大学,电气工程学院,江苏南京211189

出　　处：《电力电子技术》2022年第6期10-14,共5页Power Electronics

基　　金：中央高校基本科研业务费专项资金(NP2020411)。

摘　　要：双凸极电机(DSM)具有非线性结构,其电感是非正弦的,传统驱动方法为方波驱动,但方波电流中含有大量高次谐波,它们会产生较大的转矩脉动,对直流转矩的贡献却较小。为抑制转矩脉动,在此将正弦波驱动应用于DSM中,使得电枢电流中只含有基波,从而减小转矩脉动。但当直流母线电压较低时,由于电枢电感的存在,相电流会产生一定畸变,从而影响转矩特性。为解决该问题,在此提出了正弦波驱动提前角控制优化策略,通过提前换相来改善电流畸变问题。最后通过实验验证了所提方法的有效性。Doubly salient motor(DSM) has the nonlinear structure,and its inductance is non-sinusoidal,the traditional driving method is square-wave drive,but the square-wave contains significant high-order harmonics,which will cause larger torque ripple,while their contribution to DC torque is small.In order to suppress the torque ripple,the sinewave drive to the DSM is applied,so that the armature current contains only the fundamental wave,so as to reduce the torque ripple.However,when the DC bus voltage is low,due to the existence of armature inductance,the phase current will produce a certain distortion,which has bad affect on torque characteristics.In order to solve this problem,sine-wave drive advance angle control optimization strategy is proposed to eliminate current distortion through advance commutation.Finally,the effectiveness of the proposed method is verified by experiments.

关 键 词：双凸极电机 转矩脉动 正弦波驱动 提前角控制 

分 类 号：TM352[电气工程—电机]