Oregon State University

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Event Details

Colloquium: The Next Generation Wireless Power Transfer: A Capacitive Perspective

Monday, March 12, 2018 9:00 AM - 10:00 AM

Fei Lu, postdoctoral researcher and lecturer
Department of Electrical Engineering
San Diego State University

Capacitive power transfer (CPT) technology is an effective way to charge electric vehicles. Compared to the conventional inductive power transfer (IPT) system, a CPT system has three advantages: it does not generate eddy-current loss; it can reduce the system weight and cost; it has better misalignment performance. However, the coupling capacitance in a CPT system is usually in the pF range, which limits the CPT system power and efficiency.

This talk introduces the solution to achieve a long-distance, high-power and high-efficiency CPT system for the electric vehicle charging application. A state-of-the-art prototype is experimentally realized, which demonstrates that a CPT system can transfer 2.4 kW power through an airgap distance of 150 mm with a dc-dc efficiency of 90.8% from the dc source to the battery. In addition, the dynamic CPT system can be applied on a highway to charge the vehicles in moving status, achieving a green transportation system. Further safety study also shows that the CPT technology could be safe for the general public.

Fei Lu is a postdoctoral researcher and lecturer in the Department of Electrical Engineering at the San Diego State University working with the department chair Professor Chris Mi. He received the Ph.D degree in Electrical Engineering from the University of Michigan-Ann Arbor supervised by Professor Chris Mi and Professor Heath Hofmann in 2017. Before this, he received the Master and Bachelor degrees from Harbin Institute of Technology, China, in 2010 and 2012, respectively. His research focuses on the wireless power transfer technology, especially the capacitive method, high-frequency resonant converters, and the application of wide-band-gap power devices. His research on the capacitive power transfer has received the 2015 Prize Letter Award, 2016 Second-Place Prize Paper Award both from IEEE Transactions on Power Electronics, and the 2017 Second-Place Student Demo Prize from ECCE 2017 conference.

Kelley Engineering Center (campus map)
1 541 737 3617
Sch Elect Engr/Comp Sci