High Current Planar Magnetics for High Efficiency Bidirectional DC-DC Converters for Fuel Cell Applications

Riccardo Pittini, Zhe Zhang, Michael A. E. Andersen

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

    Abstract

    Efficiency is one of the main concerns during the design phase of switch mode power supply. Planar magnetics based on PCB windings have the potential to reduce the magnetic manufacturing cost however, one of their main drawbacks comes from their low filling factor and high stray capacitance. This paper presents an analysis of different planar windings configurations focusing on dc and ac resistances in order to achieve highly efficiency in dc-dc converters. The analysis considers different copper thicknesses form 70 μm up to 1500 μm (extreme copper PCB) taking into account manufacturing complexity and challenges. The analysis is focused on a high current inductor for a dc-dc converter for fuel cell applications and it is based on FEM simulations. Analysis and results are verified on a 6 kW dc-dc isolated full bridge boost converter prototype based on fully planar magnetics achieving a peak efficiency of 97.8%.
    Original languageEnglish
    Title of host publicationProceedings of Twenty-Ninth Annual IEEE Applied Power Electronics Conference and Exposition
    PublisherIEEE
    Publication date2014
    Pages2641-2648
    ISBN (Print)978-1-4799-2325-0
    DOIs
    Publication statusPublished - 2014
    Event2014 IEEE Applied Power Electronics Conference and Exposition - Fort Worth Convention Center , Fort Worth, United States
    Duration: 16 Mar 201420 Mar 2014
    Conference number: 29
    https://apec-conf.org/uploads/documents/APEC2014pocketv1feb15.pdf

    Conference

    Conference2014 IEEE Applied Power Electronics Conference and Exposition
    Number29
    LocationFort Worth Convention Center
    Country/TerritoryUnited States
    CityFort Worth
    Period16/03/201420/03/2014
    Internet address

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