Harmonic Current Suppression Strategy for High-Speed Maglev Train Based on Integral Sliding Mode
Cao Xueqian1,2, Ge Qiongxuan1, Zhu Jinquan1,2, Zhao Mutian1,2, Wang Xiaoxin1
1. Key Laboratory of Power Electronics and Electric Drive Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China; 2. University of Chinese Academy of Sciences Beijing 100049 China
Abstract：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.
曹学谦, 葛琼璇, 朱进权, 赵牧天, 王晓新. 基于积分滑模的高速磁悬浮列车谐波电流抑制策略[J]. 电工技术学报, 2022, 37(22): 5817-5825.
Cao Xueqian, Ge Qiongxuan, Zhu Jinquan, Zhao Mutian, Wang Xiaoxin. Harmonic Current Suppression Strategy for High-Speed Maglev Train Based on Integral Sliding Mode. Transactions of China Electrotechnical Society, 2022, 37(22): 5817-5825.
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2022, Vol. 37 
