In a system for wirelessly transferring power from a primary side across an airgap to a secondary side, the secondary side includes two parallel resonating circuits (27) each including two parallel resonating paths with a series connection of a resonating inductor (28), and a resonating capacitor 29. A rectifier (21) is connected to the output of each resonating path for converting the AC output (12') of the resonating paths to a DC output (13'). The outputs of the rectifiers (21) are connected in parallel to provide the AC output power (13) to a load such as a battery or the like. Each resonating path further includes a symmetry inductance connected in series to improve current sharing among the resonating paths and to reduce the higher harmonic portion in the resonating paths. For balancing the flux each resonating circuit 27 includes in a preferred embodiment of the invention a symmetry winding (30) wound on the same core as the resonating inductor 28 of that resonating path where all symmetry windings (3) are connected in parallel to ensure optimal flux sharing.


    Access

    Download


    Export, share and cite



    Title :

    WIRELESS HIGH POWER TRANSFER


    Additional title:

    DRAHTLOSE ÜBERTRAGUNG GROSSER STROMMENGEN
    TRANSFERT DE PUISSANCE ÉLEVÉE SANS FIL


    Contributors:

    Publication date :

    2022-04-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01F MAGNETS , Magnete



    WIRELESS HIGH POWER TRANSFER

    RICHTER ULRICH | European Patent Office | 2019

    Free access

    Wireless high power transfer

    RICHTER ULRICH | European Patent Office | 2020

    Free access

    Enclosures for high power wireless power transfer systems

    LESTOQUOY GUILLAUME / KURS ANDRE B | European Patent Office | 2020

    Free access

    A review of high-power wireless power transfer

    Foote, Andrew / Onar, Omer C. | IEEE | 2017


    WIRELESS POWER TRANSFER SYSTEM AND WIRELESS POWER TRANSFER METHOD

    UCHIDA AKIYOSHI / OZAKI KAZUYUKI / TAGUCHI MASAKAZU et al. | European Patent Office | 2018

    Free access