1. Department of Electrical Engineering, Institute of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai, China
2. University of Shanghai for Science and Technology, Shanghai, China
3. Center for More-Electric-Aircraft Power System, the Key Laboratory of New Energy Generation and Power Conversion of Jiangsu Province, Nanjing University of Aeronautics and Astronautics, Nanjing, China
4. Department of Electrical Engineering, Institute of Electrical Engineering, Qingdao University, Qingdao, China
5. National Engineering Laboratory of Energy-saving Motor and Control Technique, Anhui University, Hefei, China