One aspect provides a wireless power transmitter. The wireless power transmitter includes a transmit antenna configured to generate a field for wireless transmit power in both a first and second configuration. The wireless power transmitter further includes a first capacitor. The wireless power transmitter further includes at least one switch configured to selectively connect the first capacitor in one of the first and second configuration, the first capacitor being in parallel with the transmit antenna in the first configuration and in series with the transmit antenna in the second configuration. The wireless power transmitter further includes a second capacitor in parallel with the transmit antenna and a transformer configured to operate at a first turns-ratio in the first configuration and a second turns-ratio in the second configuration, the first turns-ratio being lower than the second turns-ratio.


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    Title :

    Systems and methods for bi-state impedance conversion in wireless power transfer



    Publication date :

    2018-06-12


    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



    SYSTEMS AND METHODS FOR BI-STATE IMPEDANCE CONVERSION IN WIRELESS POWER TRANSFER

    HUANG CHANG-YU / BEAVER JONATHAN / KEELING NICHOLAS ATHOL et al. | European Patent Office | 2017

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    SYSTEMS AND METHODS FOR BI-STATE IMPEDANCE CONVERSION IN WIRELESS POWER TRANSFER

    HUANG CHANG-YU / BEAVER JONATHAN / KEELING NICHOLAS ATHOL et al. | European Patent Office | 2016

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    SYSTEMS AND METHODS FOR BI-STATE IMPEDANCE CONVERSION IN WIRELESS POWER TRANSFER

    HUANG CHANG YU / BEAVER JONATHAN / KEELING NICHOLAS ATHOL et al. | European Patent Office | 2016

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    Systems and methods for bi-state impedance conversion in wireless power transfer

    HUANG CHANG-YU / BEAVER JONATHAN / KEELING NICHOLAS ATHOL et al. | European Patent Office | 2016

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    2 SYSTEMS AND METHODS FOR BI-STATE IMPEDANCE CONVERSION IN WIRELESS POWER TRANSFER

    HUANG CHANG YU / BEAVER JONATHAN / KEELING NICHOLAS ATHOL et al. | European Patent Office | 2017

    Free access