1. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore
2. Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden
3. Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, SAR, China
4. Schaeffler Hub for Advanced Research at NTU (SHARE at NTU), Schaeffler (Singapore) Pte. Ltd., Singapore