1. School of Electrical and Electronic Engineering, Huazhong University of Science and Technology,Wuhan,China,430074
2. China Southern Power Grid Energy Storage Company Limited,Guangzhou,China,516100
3. Wuhan NARI Limited Company of State Grid Electric Power Research Institute,Wuhan,China,430074
4. Dongfang Electrical Machinery Company Limited,Dongfang Electric Corporation,Deyang,China,618000