Design of the planar transformer in LLC resonant converters for micro-grid applications

Jun Zhang, W. G. Hurley, W. H. Wölfle

Research output: Chapter in Book or Conference Publication/ProceedingConference Publicationpeer-review

22 Citations (Scopus)

Abstract

LLC resonant converters may be applied as an intermediate converter in low power level micro-grid systems. The field of planar magnetics is continuously pushing its utilization in resonant converters as higher power densities and lower profiles are achieved. The design process for the planar transformer is significant due to the gap being placed on the magnetic core for the proper magnetizing inductance requirement. The optimum design methodology for the conventional transformer has been extended to the planar transformer. Design considerations and equations are presented. The planar transformer for a 240 W, 105 kHz LLC resonant converter was fabricated. The experiments were carried out and the results verify the design methodology and the implementation method.

Original languageEnglish
Title of host publication2014 IEEE 5th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2014
PublisherIEEE Computer Society
ISBN (Print)9781479951154
DOIs
Publication statusPublished - 2014
Event2014 IEEE 5th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2014 - Galway, Ireland
Duration: 24 Jun 201427 Jun 2014

Publication series

Name2014 IEEE 5th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2014

Conference

Conference2014 IEEE 5th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2014
Country/TerritoryIreland
CityGalway
Period24/06/1427/06/14

Keywords

  • LLC resonant converter
  • micro-grid
  • Planar transformer
  • transformer design

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