1. Department of Electrical Engineering, National Cheng Kung University, Tainan City, Taiwan
2. Institute of Power Engineering, Tomsk Polytechnic University, Tomsk, Russia
3. Department of Electrical Engineering, Universiti Malaya, Kuala Lumpur, Malaysia
4. Department of Electrical and Electronic Engineering, Universiti Tunku Abdul Rahman, Kajang, Malaysia
5. Department of Electrical Engineering, Indian Institute of Technology, Roorkee, Roorkee, U.K., India