1. Department of Electrical and Electronics Engineering, College of Engineering, Universiti Tenaga Nasional, Kajang, Selangor, Malaysia
2. Institute of Sustainable Energy, Universiti Tenaga Nasional, Kajang, Selangor, Malaysia
3. Department of Electrical Power Engineering, Universiti Tenaga Nasional, Selangor, Kajang, Malaysia
4. Key Laboratory of More Electric Aircraft Technology of Zhejiang Province, University of Nottingham, Ningbo, China