1. Department of Electrical Engineering, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran
2. Department of Electrical and Computer Engineering, University of Kurdistan, Sanandaj, Iran
3. Dipartimento Energia “Galileo Ferraris,”, Politecnico di Torino, Torino, Italy
4. Department of Electrical Engineering, North China Electric Power University, Baoding, China
5. Faculty of Engineering of the University of Porto and INESC TEC, Porto, Portugal