Polyphase wireless power transfer systems, coil assemblies and resonant networks

Pries, Jason L.; Galigekere, Veda Prakash; Su, Gui-Jia

Polyphase wireless power transfer systems, coil assemblies and resonant networks

Patent · Tue Mar 19 00:00:00 EDT 2024

OSTI ID:2541969

Pries, Jason L.; Galigekere, Veda Prakash; Su, Gui-Jia

Polyphase wireless power transfer systems are provided. The transfer system may be used for charging hybrid and electric vehicles. The systems are capable of transferring over 50 KW over an air gap of 15 cm. The systems use a rotating magnetic field to transfer power. The system may comprise transmitter coil assembly. The coil assembly may be one or more layers. The system may employ either unipolar or bipolar coils. The transmitter also comprises compensating capacitance connected in series with at least one coil for each phase. A value of the compensating capacitance for each phase is determined such that the transmitter has at least two independently excitable resonant modes at a resonant frequency. The transmitter is compatible with a plurality of different receivers including three-phase, single phase with a circular coil and single phase with DD coils.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-00OR22725

Assignee:: UT-Battelle, LLC (Oak Ridge, TN)

Patent Number(s):: 11,936,199

Application Number:: 17/420,486

OSTI ID:: 2541969

Country of Publication:: United States

Language:: English

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