1. Department of Electromechanical, Systems and Metal Engineering, Ghent University, Ghent, Belgium
2. Department of Electrical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
3. Department of Electrical Engineering and Automation, Aalto University, Aalto, Finland
4. Department of Electrical and Computer Engineering, San Diego State University, San Diego, CA, USA
5. Faculty of Electrical Engineering, K. N. Toosi University of Technology, Tehran, Iran