1. Rajamangala University of Technology Lanna,Department of Electrical Engineering,Chiang Mai,Thailand
2. mu Space and Advanced Technology Company Limited,Bangkok,Thailand
3. Renewable Energy Research Centre (RERC), King Mongkut's University of Technology North Bangkok,Faculty of Technical Education,Department of Teacher Training in Electrical Engineering,Bangkok,Thailand
4. Groupe de Recherche en Energie Electrique de Nancy, Universite de Lorraine,Nancy,France