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

Zian Qin, Zhan Shen, Frede Blaabjerg, Pavol Bauer

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

1 Citation (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 publication2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
EditorsA.M. Omekanda
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages650-655
Number of pages6
ISBN (Electronic)978-147997311-8
DOIs
Publication statusPublished - 2018
Event10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States
Duration: 23 Sep 201827 Sep 2018

Conference

Conference10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
CountryUnited States
CityPortland
Period23/09/1827/09/18

Keywords

  • Current ringing
  • Dual active bridge converter
  • EMI
  • Impedance model
  • Parasitic capacitor

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