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Wireless power transfer system

United States Patent

February 23, 2016
View the Complete Patent at the US Patent & Trademark Office
A system includes a first stage of an inductive power transfer system with an LCL load resonant converter with a switching section, an LCL tuning circuit, and a primary receiver pad. The IPT system includes a second stage with a secondary receiver pad, a secondary resonant circuit, a secondary rectification circuit, and a secondary decoupling converter. The secondary receiver pad connects to the secondary resonant circuit. The secondary resonant circuit connects to the secondary rectification circuit. The secondary rectification circuit connects to the secondary decoupling converter. The second stage connects to a load. The load includes an energy storage element. The second stage and load are located on a vehicle and the first stage is located at a fixed location. The primary receiver pad wirelessly transfers power to the secondary receiver pad across a gap when the vehicle positions the secondary receiver pad with respect to the primary receiver pad.
Wu; Hunter (Logan, UT), Sealy; Kylee (Logan, UT), Gilchrist; Aaron (Logan, UT)
13/ 748,269
January 23, 2013
This invention was made with government support under contract DEEE0003114 by the Department of Energy. The government has certain rights in the invention.