基于积分滑模的高速磁悬浮列车谐波电流抑制策略  

Harmonic Current Suppression Strategy for High-Speed Maglev Train Based on Integral Sliding Mode

作　　者：曹学谦 葛琼璇[1] 朱进权 赵牧天 王晓新[1] Cao Xueqian;Ge Qiongxuan;Zhu Jinquan;Zhao Mutian;Wang Xiaoxin(Key Laboratory of Power Electronics and Electric Drive Institute of Electrical Engineering Chinese Academy of Sciences,Beijing 100190 China;University of Chinese Academy of Sciences,Beijing 100049 China)

机构地区：[1]中国科学院电力电子与电气驱动重点实验室(中国科学院电工研究所),北京100190 [2]中国科学院大学,北京100049

出　　处：《电工技术学报》2022年第22期5817-5825,5861,共10页Transactions of China Electrotechnical Society

基　　金：国家重点研发计划高速磁浮交通系统关键技术研究课题资助项目(2016YFB1200602-19)。

摘　　要：高速磁悬浮列车采用长定子直线同步电机驱动,列车运行时电机定子相电流存在大量的谐波,这将影响列车的牵引控制性能并造成牵引力波动。该文针对谐波含量较高的5次和7次谐波电流推导双端供电模式下长定子直线同步电机的谐波电压数学模型,通过坐标变换与低通滤波的方式提取出谐波电流,设计基于积分滑模的谐波控制器,并在控制系统中增添谐波电流环,从而抑制电机定子电流中的5次和7次谐波分量。最后,对所提出的控制策略与传统谐波抑制策略分别进行硬件在环实验,通过对实验结果进行对比,证明所提出的策略具有更强的谐波抑制能力。The high-speed maglev train is driven by a long-stator linear synchronous motor.When the train is running,there are a large number of harmonics in the motor stator phase current,which will affect the train's traction control performance and cause traction fluctuations.This paper deduces the harmonic voltage mathematical model of the long-stator linear synchronous motor in the double feed mode for the 5th and 7th harmonic currents with higher harmonic content,and extracts the harmonic currents through coordinate transformation and low-pass filtering.A harmonic controller based on integral sliding mode is designed,and a harmonic current loop is added to the control system,thereby suppressing the 5th and 7th harmonic components in the stator current of the motor.Finally,hardware-in-the-loop experiments are carried out on the control strategy proposed in this paper and the traditional harmonic suppression strategy.Comparing the experimental results shows that the proposed strategy has a stronger harmonic suppression capability.

关 键 词：高速磁悬浮列车 双端供电 谐波抑制 坐标变换 谐波电压模型 积分滑模控制 

分 类 号：TM359.4[电气工程—电机]