1. Institute of Sustainable Energy, Universiti Tenaga Nasional, Kajang, Malaysia
2. Institute of Power Engineering, Universiti Tenaga Nasional, Kajang, Malaysia
3. Department of Electrical, Electronic and System Engineering, Faculty of Engineering and Built Environmental, Universiti Kebangsaan Malaysia, Bangi, Malaysia
4. Faculty of Engineering, Wireless and Photonics Networks Research Centre, Universiti Putra Malaysia, Serdang, Malaysia