Modelling, Analysis and Mitigation of the Transformer Current Ringing in Dual Active Bridge Converters

Zian Qin, Zhan Shen, Frede Blaabjerg, Pavol Bauer

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

10 Citations (Scopus)

Abstract

Due to the parasitic capacitances of the transformer and inductor in Dual Active Bridge (DAB) converters, ringing may happen in the transformer currents especially when the transformer turns ratio is high. This high frequency current ringing may lead to EMI issues. It is found in this paper that the inductor connected on the low voltage side rather than the high voltage side of a DAB converter can help to mitigate the current ringing. The impedance of the magnetic tank is modelled to analyze the current ringing. The analysis is verified on a 2.5 kW DAB prototype.
Original languageEnglish
Title of host publicationProceedings of the IEEE Energy Conversion Congress and Exposition (ECCE 2018)
Number of pages6
Place of PublicationUSA
PublisherIEEE Press
Publication dateSept 2018
Pages650-655
ISBN (Print)978-1-4799-7313-2
ISBN (Electronic)978-1-4799-7312-5
DOIs
Publication statusPublished - Sept 2018
EventIEEE Energy Conversion Congress & Exposition ECCE 2018 - Portland, United States
Duration: 23 Sept 201827 Sept 2018
http://www.ieee-ecce.org/2018/

Conference

ConferenceIEEE Energy Conversion Congress & Exposition ECCE 2018
Country/TerritoryUnited States
CityPortland
Period23/09/201827/09/2018
Internet address

Keywords

  • dual active bridge converter
  • parasitic capacitor
  • impedance model
  • current ringing
  • EMI

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