1. Benha University,Faculty of Engneering,Dept. of Electrical Engineering,Benha,Egypt
2. Helwan University,Faculty of Technology,Dept. of Electrical Technology,Cairo,Egypt
3. Ain Shams University,Faculty of Egineering,Dept. of Electrical Power and Machines,Cairo,Egypt
4. Prince Sattam Bin Abdulaziz University & Helwan University,Faculty of Egineering & Technology and Industrial Education,Dept. of Electrical Egineering & Electrical Technology,Al-Kharj,Saudi Arabia & Cairo,Egypt