SS1: Advanced Wireless Power Transfer for Electric Vehicles


Since the Society of Automobile Engineers (SAE) launched the industry-wide specification guideline J2954 for wireless charging of light duty electric and plug-in electric vehicles (EVs), research activities on interoperability, electromagnetic compatibility, minimum performance, safety and testing of wireless power transfer (WPT) in EVs are intensified over the last few years. The current version of SAE TIR J2954 only addresses the unidirectional charging from grid to vehicle, while the bidirectional energy transfer is not covered. The guideline J2954 calls for an operating frequency of 85 kHz and power levels of 3.7 kW, 7.7 kW, 11.0 kW and 22.0 kW, but other operating frequencies and power levels (e.g., above 50 kW) are not discussed. Besides, safety issues, such as human exposure to electromagnetic fields, are not included in the proposal. This special session will focus on the emerging WPT technologies to solve the current and future issues of WPT in EVs.

Topics of this special session include, but not limited to the following:

  • Static charging for pure EVs and plug-in hybrid EVs
  • Dynamic charging for road-powered EVs (RPEVs)
  • Inductive power transfer, capacitive power transfer and hybrid power transfer
  • Modular WPT systems
  • Advanced positioning technologies
  • Multi-physics field design optimization
  • Foreign object detection
  • Wireless machine drives


Dr. Xing Zhao (Chair), Lecturer, University of York, Email:

Dr. Xing Zhao received his B.Eng. degree in Electrical Engineering from the Nanjing University of Aeronautics and Astronautics, China, in 2014. He then served as an Engineer in aircraft industry for two years. He obtained the Ph.D. degree in Electrical Engineering from The Hong Kong Polytechnic University, Hong Kong SAR, in 2020. From July 2019 to January 2020, he was a Research Scholar with the Center for Advanced Power Systems, Florida State University, United States. Since July 2020, he has been with the Department of Electrical Engineering, The Hong Kong Polytechnic University, where he currently holds a position of Research Assistant Professor. His research interests include electrical machines and power electronics with applications to EV and renewable energy.

Dr. Yun Yang (Co-Chair), Research Assistant Professor, The Hong Kong Polytechnic University, Email:, Tel: (+852) 27666186

Dr. Yun Yang received his B.Sc. degree in Electrical Engineering from Wuhan University in 2012. He then obtained his M.Sc. and Ph.D. degrees in Electrical Engineering and Power Electronics from The University of Hong Kong in 2013 and 2017, respectively. From November 2017 to August 2020, he was a Postdoctoral-Fellow in the Department of Electrical and Electronic Engineering, The University of Hong Kong. Dr. Yang joined Department of Electrical Engineering of the Hong Kong Polytechnic University as a Research Assistant Professor in August 2020. His research interests include wireless power transfer, microgrid, and power electronics.