A constant resistance analysis and control of cascaded buck and boost converter for wireless EV chargers

Kerim Colak, Mariusz Bojarski, Erdem Asa, Dariusz Czarkowski

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

40 Scopus citations

Abstract

This paper presents a new constant resistance control technique for a cascaded buck and boost converter, which is suitable for wireless energy transfer pickup systems in variable load applications such as battery or ultra-capacitor charging. In order to achieve high efficiency, an impedance matching network is commonly used in the contactless energy transfer systems especially for low coupling coefficient circuits. The proposed control technique avoids a divergence of the designed impedance matching system considering the load variation. This is important to secure high wireless energy transfer efficiency under voltage and current changes at the load terminals. The transfer function of the converter is presented with theoretical calculations describing the small-signal model. The system model is used to control the resistance in the cascaded buck and boost converter for electric vehicle (EV) charging applications in a 2 kW prototype.

Original languageEnglish
Title of host publicationAPEC 2015 - 30th Annual IEEE Applied Power Electronics Conference and Exposition
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3157-3161
Number of pages5
EditionMay
ISBN (Electronic)9781479967353
DOIs
StatePublished - May 8 2015
Externally publishedYes
Event30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015 - Charlotte, United States
Duration: Mar 15 2015Mar 19 2015

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
NumberMay
Volume2015-May

Conference

Conference30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015
Country/TerritoryUnited States
CityCharlotte
Period03/15/1503/19/15

Keywords

  • EV charger
  • buck and boost
  • cascaded
  • constant resistance control
  • converter
  • wireless

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