基于注入分段式谐波电流抑制开关磁阻电机转矩脉动的控制策略  

Control Strategy of Minimizing Torque Ripples of the Switched Reluctance Motor by Injecting Piecewise Harmonic Currents

作　　者：马铭遥 余发 杨晴晴 王瑞[1] 杨淑英[1] 张兴[1] 

机构地区：[1]合肥工业大学电气与自动化工程学院

出　　处：《中国电机工程学报》2018年第1期285-291,共7页Proceedings of the CSEE

基　　金：国家自然基金青年基金项目(51507044)~~

摘　　要：开关磁阻电机（switchedreluctancemotor，SRM）较大的转矩脉动问题制约了其广泛应用，抑制SR电动机转矩脉动的研究是近年来研究领域的热点之一。该文介绍一种注入一系列分段谐波电流的控制策略，该控制策略采用向初始矩形参考电流中注入多次谐波分量，使之生成相应的额外转矩，来补充或消除原参考电流产生的转矩脉动。为使得谐波电流注入下SR电机转矩脉动降低的更加灵活与有效，将注入的，z次正弦谐波电流分量等分成，z段，通过调节相应段的谐波分量系数，独立控制各分段区间参考电流波形，进而控制电机输出转矩。新的控制策略在电流斩波控制下可较好的实现抑制转矩脉动的目标。最后，通过仿真与实验验证上述所提方法的实用性及有效性。It is widely agreed that the large torque ripple problems limit the application of switched reluctance motor （SRM） since it turned up. Hence the study of minimizing torque ripples of SRM drives is one of the most popular research area all time. This paper presented a novel control strategy by injecting of a series of current harmonics, which is generally added to the conventional current reference to create an additional torque components for contributing its values and realizing optimized synthesized torque output. For enhancing the flexibility and effectivity of the proposed harmonic injection control strategy, the injected n sub-harmonic sinusoidal components are divided into n segments and controlled independently by changing its harmonic coefficients. The proposed control strategy can accurately output the demanded total torque with optimized torque ripples. Finally, Simulation and experimental results show that the proposed control strategy reduces the torque ripple significantly.

关 键 词：开关磁阻电机 转矩脉动 谐波电流注入 电流斩波控制 谐波系数 

分 类 号：TM352[电气工程—电机]