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A Double-Sided LCC Compensation Network and Its Tuning Method for Wireless Power Transfer

IEEE Transactions on Vehicular Technology · 2014 · Vol. 64(6) · pp. 2261–2273

Siqi Li✉(Kunming University of Science and Technology)Weihan Li(Hefei University of Technology)Junjun Deng(Northwestern Polytechnical University)Trong Duy Nguyen(University of Michigan)Chris Mı(University of Michigan)

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Abstract

This paper proposes a double-sided LCC compensation network and its tuning method for wireless power transfer (WPT). With the proposed topology and its tuning method, the resonant frequency is irrelevant with the coupling coefficient between the two coils and is also independent of the load condition, which means that the system can work at a constant switching frequency. Analysis in frequency domain is given to show the characteristics of the proposed method. We also propose a method to tune the network to realize zero voltage switching (ZVS) for the Primary-side switches. Simulation and experimental results verified analysis and validity of the proposed compensation network and the tuning method. A wireless charging system with output power of up to 7.7 kW for electric vehicles was built, and 96% efficiency from dc power source to battery load is achieved.

Wireless Power Transfer Systems Energy Harvesting in Wireless Networks Advanced Battery Technologies ResearchWireless power transferCompensation (psychology)Maximum power transfer theoremElectronic engineeringPower (physics)WirelessNetwork topologyTopology (electrical circuits)VoltageBattery (electricity)