High efficiency bidirectional 5kW DC-DC converter with super-junction MOSFETs for electric vehicle super-capacitor systems

Andrew Hopkins, Neville McNeill, Philip Anthony, Philip Mellor

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

7 Citations (Scopus)

Abstract

This paper presents a high efficiency 5-kW bidirectional DC-DC converter for use in electric vehicle super-capacitor systems. Super-junction MOSFETs are deployed in the power stage to minimize losses. This is achieved using a snubber inductor and by arranging the gate signal underlap delays in order to control charging current caused by the devices' highly non-linear output capacitance and to deactivate the intrinsic body drain diode respectively. The result is a 5-kW power converter with an estimated efficiency exceeding 99% in the power semiconductor stage and requiring no forced cooling.
Original languageEnglish
Title of host publication2015 IEEE Energy Conversion Congress and Exposition (ECCE)
Place of PublicationPiscataway, N.J.
PublisherIEEE
ISBN (Print)978-1-4673-7151-3
DOIs
Publication statusPublished - 24 Sep 2015
Externally publishedYes
EventEnergy Conversion Congress and Exposition (ECCE), 2015 IEEE - Montreal, QC, United States
Duration: 20 Sep 201524 Sep 2015

Conference

ConferenceEnergy Conversion Congress and Exposition (ECCE), 2015 IEEE
CountryUnited States
CityMontreal, QC
Period20/09/1524/09/15

Keywords

  • MOSFET
  • switches
  • quality of service
  • logic gates
  • delays
  • supercapacitors

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