1. School of Electrical Engineering, Zhengzhou University, Zhengzhou, People’s Republic of China
2. Mechatronics, Embedded Systems and Automation (MESA) Lab, School of Engineering, University of California, Merced, CA, USA
3. School of Mechanical Science & Engineering, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
4. State Key Lab of Power System, Department of Energy and Power Engineering, Tsinghua University, Beijing, People’s Republic of China