1. Department of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
2. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore
3. Department of Engineering and Architecture, University of Trieste, Trieste, Italy
4. Department of Communications and Networks, Prince Sultan University, Riyadh, Saudi Arabia
5. Department of Energy Technology, Center for Research on Microgrids, Aalborg University, Aalborg, Denmark