1. Institut Kemahiran Mara Johor Bahru,Johor Bahru,Malaysia,81200
2. Centre of Excellence for Renewable Energy, School of Electrical Systems Engineering, Universiti Malaysia Perlis, Pauh Putra Campus,Arau,Perlis,Malaysia,02600
3. Institute of High Voltage and High Current (IVAT) Universiti Teknologi Malaysia,Johor Bahru,Malaysia,81310 UTM