Field-cannon-technique to Reduce AC Resistance of Foil Windings in High Frequency Transformers

Yudi Xiao, Martijn Sebastiaan Duraij, Zhe Zhang, Tiberiu Gabriel Zsurzsan, Mads Hansen, Brian Thomsen

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

    Abstract

    Minimizing transformer winding loss is a prominent factor to increase efficiency of power electronics converters. This is especially valid for modern switched-mode power supplies, where eddy current effects on windings become dominant due to continuously elevated switching frequency. In this paper, a field shaping technique, dubbed the field-cannon-technique, is proposed to mitigate eddy current effects in high frequency transformers’ foil windings. The basic principle and the implementation of the proposed technique is introduced. A model is derived using finite difference method, in order to calculate the distribution of the magnetic field within the transformers implemented with the field-cannon-technique. Finally, the technique is verified by experiments, where the winding resistance of the transformer is reduced by a factor of three.
    Original languageEnglish
    Title of host publicationProceedings of IEEE 9th International Power Electronics and Motion Control Conference
    PublisherIEEE
    Publication date2021
    Pages1063-1068
    ISBN (Print)978-1-7281-5302-5
    DOIs
    Publication statusPublished - 2021
    Event2020 IEEE 9th International Power Electronics and Motion Control Conference - International Youth Cultural Centre, Nanjing, China
    Duration: 29 Nov 20202 Dec 2020
    https://epe-ecce-conferences.com/epe2020/ipemc-2020-ecce-asia/

    Conference

    Conference2020 IEEE 9th International Power Electronics and Motion Control Conference
    LocationInternational Youth Cultural Centre
    Country/TerritoryChina
    CityNanjing
    Period29/11/202002/12/2020
    Internet address

    Keywords

    • Eddy current
    • High frequency
    • Transformers
    • Magnetic field shaping

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