Self-oscillating loop based piezoelectric power converter

Martin Schøler Rødgaard (Inventor), Michael A. E. Andersen (Inventor), Andreas Esbern (Inventor), Kasper Sinding Meyer (Inventor)

    Research output: Patent

    273 Downloads (Pure)

    Abstract

    The present invention relates to a piezoelectric power converter comprising an input driver electrically coupled directly to an input or primary electrode of the piezoelectric transformer without any intervening series or parallel inductor. A feedback loop is operatively coupled between an output voltage of the piezoelectric transformer and the input driver to provide a self-oscillation loop around a primary section of the piezoelectric transformer oscillating at an excitation frequency. Electrical characteristics of the feedback loop are configured to set the excitation frequency of the self- oscillation loop within a zero-voltage-switching (ZVS) operation range of the piezoelectric transformer.
    Original languageEnglish
    IPCH01L41/04; H02M3/338; H02M7/537
    Patent numberWO2013083678
    Filing date06/12/2012
    Country/TerritoryInternational Bureau of the World Intellectual Property Organization (WIPO)
    Publication statusPublished - 2013

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