1. El-Safawa High Institute of Engineering,Electronics, Communications, Computers Engineering Department,Cairo,Egypt
2. Zagazig University,Faculty of Engineering,Electrical Power and Machines Dept,Zagazig,Egypt
3. Must University,Faculty of Engineering,Electrical Power and Machines Dept,6th October, Cairo,Egypt
4. Pyramids Higher Institute for Engineering and Technology,Electrical Power and Control Department,6th October, Cairo,Egypt