1. Hangzhou Electric Power Equipment Manufacturing Co., Ltd,Hangzhou,China
2. Polytechnic Institute, Zhejiang University,Zhejiang Provincial Key Laboratory of Electrical Machine Systems,Hangzhou,China
3. Zhejiang University,College of Electrical Engineering Zhejiang Provincial Key Laboratory of Electrical Machine Systems,Hangzhou,China
4. PowerChina Huadong Engineering Co., Ltd,Hangzhou,China
5. School of Electrical Engineering Guizhou University,Guiyang,China