1. College of New Energy, China University of Petroleum (East China), Shandong, China
2. Automatic Control Laboratory, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
3. State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, China
4. School of Information Science and Technology, ShanghaiTech University, Shanghai, China
5. Department of Electronic Engineering and Beijing National Research Center for Information Science and Technology, Tsinghua University, Beijing, China