1. Kafrelsheikh University,Faculty of Engineering,Department of Electrical Engineering,Egypt
2. Tanta University,Faculty of Engineering,Department of Electric Power and Machines Engineering,Tanta,Egypt,31733
3. Zagazig University,Faculty of Engineering,Electrical Power and Machines Dept.,Zagazig,Egypt,44519
4. Beni-Suef University,Faculty of Technology and Education,Department of Process Control Technology,Beni Suef,Egypt