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

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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
EventTwenty-Ninth Annual IEEE Applied Power Electronics Conference and Exposition - Fort Worth Convention Center , Fort Worth, TX , United States
Duration: 16 Mar 201420 Mar 2014
http://www.apec-conf.org/

Conference

ConferenceTwenty-Ninth Annual IEEE Applied Power Electronics Conference and Exposition
LocationFort Worth Convention Center
CountryUnited States
CityFort Worth, TX
Period16/03/201420/03/2014
Internet address

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