1. Hubei Key Laboratory of Power System Design and Test for Electrical Vehicle, Hubei University of Arts and Science, Xiangyang, China
2. School of Automotive and Transportation Engineering, Hubei University of Arts and Science, Xiangyang, China
3. Design Department, Xiangyang CRRC Motor Technology Co., Ltd., Xiangyang, China
4. School of Electrical Engineering, Xi’an Jiaotong University, Xi’an, China