Wide Input Range Power Converters Using a Variable Turns Ratio Transformer

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Abstract

A new integrated transformer with variable turns ratio is proposed to enable dc-dc converters operating over a wide input voltage range. The integrated transformer employs a new geometry of magnetic core with “four legs”, two primary windings with orthogonal arrangement, and “8” shape connection of diagonal secondary windings, in order to make the transformer turns ratio adjustable by controlling the phase between the two current excitations subjected to the two primary windings. Full-bridge boost dc-dc converter is employed with the proposed transformer to demonstrate the feasibility of the variable turns ratio. 1-kW experimental prototype targeting to the PV standalone system has been built to well demonstrate a wide input voltage operation with high efficiencies.
Original languageEnglish
Title of host publicationProceedings of 2016 IEEE Applied Power Electronics Conference and Exposition
PublisherIEEE
Publication date2016
Pages2473-2478
ISBN (Print)978-1-4673-8393-6
DOIs
Publication statusPublished - 2016
Event2016 IEEE Applied Power Electronics Conference and Exposition - Long Beach Convention & Entertainment Center, Long Beach, United States
Duration: 20 Mar 201624 Mar 2016
Conference number: 31
https://apec-conf.org/uploads/documents/APEC-2016-FINAL-PROGRAM-BOOK.pdf

Conference

Conference2016 IEEE Applied Power Electronics Conference and Exposition
Number31
LocationLong Beach Convention & Entertainment Center
Country/TerritoryUnited States
CityLong Beach
Period20/03/201624/03/2016
Internet address

Keywords

  • Wide input voltage
  • dc-dc
  • Integrated transformer
  • Variable turns ratio

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