1. School of Electrical, Electronics and Computer Engineering; University of Western Australia; 35 Stirling Highway Crawley WA 6009 Australia
2. Department of Mechatronics Engineering; International Islamic University Malaysia; Jalan Gombak 53100 Kuala Lumpur Malaysia
3. Centre for Energy Informatics; University of Southern Denmark; Campusvej 55, DK-5230 Odense M Denmark
4. Faculty of Management Information System; Banking University Ho Chi Minh City; 39 Ham Nghi Street, District 1 Ho Chi Minh City Vietnam