Self-oscillating Galvanic Isolated Bidirectional Very High Frequency DC-DC Converter

Jeppe Arnsdorf Pedersen, Mickey Pierre Madsen, Arnold Knott, Arnold Knott, Michael A. E. Andersen

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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    Abstract

    This paper describes a galvanic isolated bidirectional Very High Frequency (VHF = 30 MHz - 300MHz) ClassE converter. The reason for increasing the switching frequency is to minimize the passive components in the converter. To make the converter topology bidirectional the rectifier has to be synchronous. This increases the complexity of the gate drives, which in this paper is solved by using a self-oscillating gate drive. A bidirectional converter has been implemented and is described in this paper; the converter reaches efficiencies above 80% in forward conduction mode and 73.5% in reverse conduction mode. The designed converter operates at a switching frequency of 35.6 MHz, which is well within the VHF range. The same converter is also implemented with PCB embedded inductors to minimize cost and the physical volume of the total converter.
    Original languageEnglish
    Title of host publicationProceedings of APEC 2015
    Number of pages5
    PublisherIEEE
    Publication date2015
    DOIs
    Publication statusPublished - 2015
    Event30th Applied Power Electronics Conference and Exposition - Charlotte Convention Center, Charlotte, United States
    Duration: 15 Mar 201519 Mar 2015

    Conference

    Conference30th Applied Power Electronics Conference and Exposition
    LocationCharlotte Convention Center
    Country/TerritoryUnited States
    CityCharlotte
    Period15/03/201519/03/2015

    Keywords

    • Self-oscillating
    • Galvanic Isolated
    • Bidirectional
    • Very High Frequency
    • DC-DC Converter
    • VHF

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