What is the Best Converter for Low Voltage Fuel Cell Applications- A Buck or Boost?

Morten Nymand, René Tranberg, Mark E. Madsen, Udaya K. Madawala, Michael Andreas E. Andersen

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    Abstract

    Amongst many converter topologies that have been proposed and developed for low voltage fuel cell applications, isolated full-bridge Buck and Boost converters appear to be the most popular. Although the Buck topology is considered to be superior in performance, for particularly being more efficient, this claim has never been proved with a ‘proper’ comparison to the Boost topology. This paper presents a comprehensive comparison between Buck and Boost topologies, which are designed for the same specifications and tested under the same and stringent operating conditions using precision measuring equipment. Experimental results of two 1.5 kW prototype Buck and Boost converter units are presented with detailed discussions, and the paper explains why, in contrary to the popular belief, a properly designed Boost topology is superior in performance to Buck topology and more appropriate for low voltage fuel cell applications, as indicated by measured results.
    Original languageEnglish
    Title of host publication35th Annual Conference of the IEEE Industrial Electronics Society
    PublisherIEEE
    Publication date2009
    Pagespd-018988
    ISBN (Print)978-1-4244-4648-3
    DOIs
    Publication statusPublished - 2009
    Event35th Annual Conference of the IEEE Industrial Electronics Society - Porto, Portugal
    Duration: 3 Nov 20095 Nov 2009
    Conference number: 35
    http://paginas.fe.up.pt/~iecon09/

    Conference

    Conference35th Annual Conference of the IEEE Industrial Electronics Society
    Number35
    Country/TerritoryPortugal
    CityPorto
    Period03/11/200905/11/2009
    Internet address

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