公开(公告)号：US10033313B2

公开(公告)日：2018-07-24

申请号：US15031479

申请日：2013-12-16

申请人： CSR ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD.

发明人： Jianghua Feng ,  Kean Liu ,  Junfeng Xu ,  Jing Shang ,  Yuliang Wen ,  Yaping He ,  Chaoyang Zhang ,  Xiong Liu ,  Yonghui Nan ,  Huadong Liu ,  Lei Xiao ,  Hanfeng Zheng

IPC分类号： H02P6/20 ,  H02P6/182 ,  H02P6/24 ,  H02P21/18 ,  H02P21/24 ,  H02P27/08 ,  H02P29/10 ,  H02P1/02 ,  H02P21/22 ,  H02P21/36

摘要： A control method for restarting a permanent magnet synchronous motor (PMSM) in a rotating condition, and a device and a system thereof are provided. In the method, an electrical angular speed ωe of the PMSM is obtained based on a speed of a trailer to obtain a back electromotive force of the PMSM. The back electromotive force is compared with a voltage at a side of an inverter, and if the electromotive force of the permanent magnet synchronous motor is higher than the voltage at the side of the inverter, the restarting of the PMSM is forbidden, otherwise, the restarting of the PMSM is allowed. Therefore, in the present disclosure, the low-speed operating condition and the high-speed operating condition correspond to different position angles of the rotor, and the PMSM is started based on the position angle of the rotor.