Longjian Liu was born in China, in 1989. He received the B.E. degree and Ph.D. degree in electrical engineering from the Huazhong University of Science and Technology (HUST), Wuhan, China, in 2013, and 2019, respectively. He is currently a Lecturer with the Kunming University of Science and Technology (KUST). His current research interests include electrical machinery.

Kexun Yu received the B.E., M.E., and Ph.D. degrees in electrical engineering from HUST, Wuhan, China, in 1982, 1985, and 1989, respectively. He is currently a Professor with the HUST. His current research interests include high performance electric drive systems and optimization design of electromagnetic devices.

Xianfei Xie was born in China, in 1988. He received the B.E. degree and Ph.D. degrees in electrical engineering from the HUST, China, in 2011, and 2016, respectively. He is currently an Associate Professor with the HUST. His current research interests include electrical machinery and drives and design of power electronics.

Zhijian Liu was born in China, in 1975. He received the Ph.D. degrees in Electric Power System and Automation from the Harbin Institute of Technology, China, in 2010. He is currently a Professor with the KUST. His current research interests include power system.