A power transmission system for wirelessly supplying power to a load comprising a transmitter inductor, a first switch coupled between a voltage source and the transmitter inductor and controlled to generate a varying current through the transmitter inductor, a receiver inductor magnetically coupled to the transmitter inductor, a voltage regulator receiving power from the receiver inductor to generate a regulator output voltage, a load coupled to an output of the voltage regulator, wherein power in the transmitter inductor is wirelessly coupled to the receiver inductor for being converted to a regulated voltage by the regulator for driving the load, a peak voltage detector coupled to detect a peak voltage on the transmitter inductor, wherein a peak voltage on the transmitter inductor is affected by an ability of the voltage regulator to achieve regulation for driving the load and a controller for controlling a peak current through the transmitter inductor, the controller being controlled to modulate the peak current through the transmitter inductor so as to modulate a peak current through the receiver inductor, wherein the peak voltage on the transmitter inductor increases during a time when the voltage regulator is able to achieve regulation, wherein the controller is configured to terminate modulating the peak current through the transmitter inductor, based on a change in the peak voltage, so that the voltage regulator is able to achieve regulation.


    Access

    Download


    Export, share and cite



    Title :

    AUTO RESONANT DRIVER FOR WIRELESS POWER TRANSMITTER SENSING REQUIRED TRANSMIT POWER FOR OPTIMUM EFFICIENCY


    Additional title:

    SELBSTRESONANTER TREIBER ZUR ERFASSUNG DER FÜR EINEN DRAHTLOSE LEISTUNGSÜBERTRÄGER ERFORDERLICHEN ÜBERTRAGUNGSLEISTUNG FÜR OPTIMALEN WIRKUNGSGRAD
    CIRCUIT DE PILOTAGE AUTO-RÉSONANT DESTINÉ À UN ÉMETTEUR DE COURANT SANS FIL DÉTECTANT LA PUISSANCE D'ÉMISSION NÉCESSAIRE POUR UNE EFFICACITÉ OPTIMALE


    Contributors:

    Publication date :

    2017-05-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H04B TRANSMISSION , Übertragung






    Wireless Power Transmitter

    CHA DAE YOUNG | European Patent Office | 2019

    Free access

    WIRELESS POWER TRANSMITTER AND WIRELESS POWER RECEIVER

    LEE BYOUNG-HEE / KWON SANG-WOOK / KIM KI-YOUNG et al. | European Patent Office | 2017

    Free access