自适应换相与转矩补偿的开关磁阻电机转矩脉动抑制  

Torque ripple suppression strategy of switched reluctance motor based on adaptive commutation and torque compensation

作　　者：孙庆国 卫功民 刘旭[1,2] SUN Qing-guo;WEI Gong-min;LIU Xu(Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province,Hebei University of Technology,Tianjin 300130,China;State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]河北工业大学河北省电磁场与电器可靠性重点实验室,天津300130 [2]河北工业大学省部共建电工装备可靠性与智能化国家重点实验室,天津300130

出　　处：《电机与控制学报》2022年第6期91-100,111,共11页Electric Machines and Control

基　　金：国家自然科学基金(51507045);河北省杰出青年科学基金(E2018202252)。

摘　　要：由开关磁阻电机的双凸极结构和非线性电磁特性引起的转矩脉动问题,严重制约其应用推广。针对其在运行过程中产生的转矩波动,本文提出一种基于换相区域转矩在线补偿的转矩分配函数控制,通过低速转矩电流比和中高速转矩磁链比将换相区分成两个区间,并分别对前后区间的参考转矩进行正、负补偿,实现了电机的转矩脉动抑制。同时,针对前一相拖尾电流引起的负转矩,提出了一种自适应换相控制策略,通过将相电流和电机转速与换相角相关联,计算延迟或提前换相角,以选取最优换相角。为了验证该方法的有效性,本文进行了仿真和实验,证明了该方案可以有效抑制开关磁阻电机的转矩脉动。The application of switched reluctance motors(SRMs) is greatly restricted by the torque ripple issue caused by its doubly salient structure and nonlinear electromagnetic characteristics. This paper presents a torque sharing function control based on online torque compensation in commutation region. The commutation region is divided into two regions by the torque current ratio at low-speed and the torque flux ratio at medium-high-speed. Meanwhile, in order to deal with the negative torque caused by the tail current of the previous phase, an adaptive commutation control strategy is proposed, where the phase current and motor speed are related to the commutation angle. The delay or the advance commutation angle can be calculated to select the optimal commutation angle. In order to verify the effectiveness of the method, simulations and experiments are carried out in this paper. It is proved that the scheme can effectively reduce the torque ripple of the SRM.

关 键 词：开关磁阻电机 转矩脉动抑制 转矩分配函数 转矩在线补偿 自适应换相 最优换相角 

分 类 号：TM352[电气工程—电机]