1. Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, Tallinn, Estonia
2. University of Tabriz, Tabriz, Iran
3. Tallinn University of Technology, Tallinn, Estonia
4. School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, Wollongong, NSW, Australia
5. University of Technology Sydney, Sydney, NSW, Australia
6. Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran