1. New and Renewable Energy Authority,Maintenance and Operation Department,Cairo,Egypt
2. Damanhour University,Faculty of Engineering,Electrical Engineering Department,Beheira,Egypt
3. Umm Al-Qura University,Faculty of Engineering and Islamic Architecture,Electrical Engineering Department,Makkah,SA
4. Menoufia University,Faculty of Engineering,Electrical Engineering Department,Shebin Elkom,Egypt,32511