1. Power Electronic and Motion Control Research CenterHarbin Institute of Technology Shenzhen Graduate SchoolShenzhen518055People's Republic of China
2. Beijing Institute of Spacecraft System EngineeringBeijing100094People's Republic of China
3. School of Optical and Electronic InformationHuazhong University of Science and TechnologyWuhan430074People's Republic of China
4. Department of EngineeringUniversity of LeicesterE804 Engineering TowerLeicesterUK