高速磁悬浮列车在双端供电模式下的电流控制策略  

Current Control Strategy for High-Speed Maglev in the Double Feeding Mode

作　　者：朱进权 葛琼璇[1] 孙鹏琨 王晓新[1] 张波[1] Zhu Jinquan;Ge Qiongxuan;Sun Pengkun;Wang Xiaoxin;Zhang Bo(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》2021年第23期4937-4947,共11页Transactions of China Electrotechnical Society

基　　金：国家重点研发计划(2016YFB1200602-20);国家自然科学基金青年基金(51907188)资助项目。

摘　　要：针对双端供电模式下高速磁悬浮列车牵引系统中的环流和馈电电缆损耗问题,提出一种改进的直接模式法电流控制策略来协调负载电流分配。该文首先建立双端供电模式下牵引系统电机电流和环流的等效电路模型,分析环流产生的原因,在此基础上提出同步坐标系下转速电流双闭环控制策略。该策略通过共用转速调节器实现总负载电流控制,通过电流调节器和环流调节器实现负载电流分配,并对线路中的环流进行抑制。硬件在环实验结果表明,该控制策略在保证电机动态性能较好的基础上实现逆变器负载电流分配,降低了馈电电缆损耗,并有效地抑制了并联逆变器模块间环流。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.

关 键 词：高速磁悬浮列车 双端供电模式 馈电电缆 环流 损耗 

分 类 号：TM359.4[电气工程—电机]