1. Institute of Rail Transit, Tongji University, Shanghai, China
2. National Maglev Transportation Engineering R&D Center, Tongji University, Shanghai, China
3. School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, China
4. State Key Laboratory of Maritime Technology and Safety, Wuhan University of Technology, Wuhan, China
5. School of Intelligent Manufacturing and Electronic Engineering, Wenzhou University of Technology, Wenzhou, China
6. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, China
7. State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin, China