POLYPHASE WIRELESS POWER TRANSFER SYSTEMS, COIL ASSEMBLIES AND RESONANT NETWORKS

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 50KW over an air gap of 15 cm. The systems use a rotating magnetic field to transfer power. The system may comprise transmit...

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Bibliographic Details
Main Authors SU, Gui-Jia, GALIGEKERE, Veda Prakash, PRIES, Jason L
Format Patent
LanguageEnglish
Published 17.03.2022
Subjects
BASIC ELECTRIC ELEMENTS
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
INDUCTANCES
MAGNETS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
SYSTEMS FOR STORING ELECTRIC ENERGY
TRANSFORMERS
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Summary: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 50KW 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.
Bibliography:Application Number: US202017420486