Traction Control Strategy of High-Speed Maglev Considering the Influence of Suspension System
Zhu Jinquan1,2, Ge Qiongxuan1, Zhang Bo1, Sun Pengkun1,2, 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 electromagnetic suspension (EMS) type high-speed maglev vehicleis driven by the long-stator linear synchronous motor. The excitation magnetic poles of motor areal so the electromagnets of suspension system, thus there is a serious nonlinear coupling relationship between the traction and levitation force of vehicle. The adjustment of the suspension system during operation will affect the traction system, which leads to traction force fluctuations. In this paper, a mathematical model of linear synchronous motor considering the influence of the suspension system is established. Aiming at the problem of traction fluctuations, a control strategy based on flux observation is proposed, which uses the extended electromotive force (EEMF) method to observe the flux. By applying the flux parameter to the speed loop and current loop, the q-axis current can be adjusted online to suppress the low-frequency traction fluctuation caused by the suspension system. However, the performance of this strategy is limited when the flux observation error exists at low speed region. Accordingly, a composite control strategy combining active disturbance rejection and flux observation algorithm is proposed, which compensates the flux observation error and other disturbances through the extend state observer (ESO). The results of hardware-in-the-loop (HIL) experiments show that the control strategy effectively suppresses the traction fluctuation caused by the influence of the suspension system, and improves the anti-load disturbance ability and dynamic performance.
朱进权, 葛琼璇, 张波, 孙鹏琨, 王晓新. 考虑悬浮系统影响的高速磁悬浮列车牵引控制策略[J]. 电工技术学报, 2022, 37(12): 3087-3096.
Zhu Jinquan, Ge Qiongxuan, Zhang Bo, Sun Pengkun, Wang Xiaoxin. Traction Control Strategy of High-Speed Maglev Considering the Influence of Suspension System. Transactions of China Electrotechnical Society, 2022, 37(12): 3087-3096.
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2022, Vol. 37 
