Disclosed are DC-to-AC converter control methods, ground assemblies and wireless power transfer methods using the same. A method for controlling a DC-to-AC converter of a ground assembly used for wireless power transfer, which includes first, second, third, and fourth switches arranged in a form of a bridge circuit between a power source and a primary coil, may comprise detecting a current flowing through the primary coil at a rising edge of an output voltage signal of the DC-to-AC converter; determining whether a strength of the current is at a negative level which falls within a predetermined reference range; and in response to a determination that the current is not at the negative level, changing switching frequencies of the DC-to-AC converter.


    Access

    Download


    Export, share and cite



    Title :

    Method for controlling DC-AC converter and ground assembly and wireless power transfer method using the same


    Contributors:

    Publication date :

    2019-08-20


    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 / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen




    - METHOD FOR CONTROLLING DC-DC CONVERTER AND GROUND ASSEMBLY AND WIRELESS POWER TRANSFER METHOD USING THE SAME

    LEE WOO YOUNG / SEONG HYUN WOOK / CHOE GYU YEONG | European Patent Office | 2017

    Free access


    WIRELESS POWER TRANSFER PAD AND GROUND ASSEMBLY HAVING THE SAME

    LEE WOO YOUNG / CHOE GYU YEONG / LEE BYOUNG KUK et al. | European Patent Office | 2017

    Free access

    WIRELESS POWER TRANSFER PAD AND GROUND ASSEMBLY HAVING THE SAME

    LEE WOO YOUNG / CHOE GYU YEONG / LEE BYOUNG KUK et al. | European Patent Office | 2017

    Free access