1. School of Electrical and Electronic Engineering, Nanyang Technological University, Jurong West, Singapore
2. Energy Research Institute, Nanyang Technological University, Jurong West, Singapore
3. Department of Electrical, Electronic and Computer Engineering, The University of Western Australia, Perth, WA, Australia
4. Tecnalia, Basque Research and Technology Alliance (BRTA), Derio, Spain
5. School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, Australia