Current Control Strategy for High-Speed Maglev in the Double Feeding Mode
Zhu Jinquan1,2, Ge Qiongxuan1, Sun Pengkun1,2, Wang Xiaoxin1, Zhang Bo1
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：In order to solve the problems of circulating current and large loss of high-speed maglev train in the double feeding mode, an improved direct mode current control strategy is proposed to regulate the load current distribution. Firstly, the paper establishes the equivalent circuit model of motor current and circulating current of traction system in the double feeding mode. Then, the reason of the circulating current is analyzed, and a double closed-loop control strategy of speed and current in synchronous coordinate system is proposed. This strategy controls the motor current by the speed regulator, distributes the motor current through the current regulator and the circulating current regulator, and suppresses the circulating current in the line. The results of hardware-in-the-loop (HIL) experiments show that the control strategy realizes the load current distribution of the inverter, reduces the loss on the feeder cable, and effectively suppresses the circulating current between the parallel inverter while ensuring good dynamic performance of the motor.
朱进权, 葛琼璇, 孙鹏琨, 王晓新, 张波. 高速磁悬浮列车在双端供电模式下的电流控制策略[J]. 电工技术学报, 2021, 36(23): 4937-4947.
Zhu Jinquan, Ge Qiongxuan, Sun Pengkun, Wang Xiaoxin, Zhang Bo. Current Control Strategy for High-Speed Maglev in the Double Feeding Mode. Transactions of China Electrotechnical Society, 2021, 36(23): 4937-4947.
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2021, Vol. 36 
