1. Shanghai Maritime University,Dept. of Electrical Engineering,Shanghai,China
2. Zhejiang HRV Electric Co. Ltd,Hangzhou,China
3. Technical University of Crete,Dept. of Electronic and Computer Engineering,Chania,Greece
4. Aalborg University,Dept. of Engery Techique,Aalborg,Denmark
5. CityU of Hongkong,Dept. of Electrical Engineering,Hongkong,China