Modeling and Control Algorithm for a Modular GaN On-Board Charging System in Automotive Applications

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

Recently, Electric Vehicle (EV) on-board charging systems have been designed to achieve high power level, high efficiency and reliable battery charging. However, it brings the complexity in the design process. This paper proposes a comprehensive control strategy for GaN-modular charging system that can implement a precise constant current- voltage (CC/CV) charging control and an excellent current sharing capability among paralleled modules. Moreover, the efficiency of the proposed system is improved at a wide range of charging power by adopting a proper load shedding scheme. The circuit configuration consists of three individual modules of two-stage converter units, in which a totem pole power factor correction (PFC) and an isolated phase shift full bridge (PSFB) are selected as the front-end and back-end converter respectively. The average current mode control employed in PSFB stage not only maintains the constant current charging, but also automatically achieves current balancing among converter modules. The theoretical analysis and simulation results of a 11kW GaN On-Board Charging (OBC) system have been presented to demonstrate the feasibility of proposed control method.
Original languageEnglish
Title of host publication2021 23rd European Conference on Power Electronics and Applications, EPE 2021 ECCE Europe
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-5
Number of pages5
ISBN (Electronic)978-9-0758-1537-5
ISBN (Print)978-1-6654-3384-6
DOIs
Publication statusPublished - 6 Sep 2021
Event2021 23rd European Conference on Power Electronics and Applications, EPE 2021 ECCE Europe: EPE 2021 - Gent, Belgium
Duration: 6 Sep 202110 Sep 2021

Publication series

Name2021 23rd European Conference on Power Electronics and Applications, EPE 2021 ECCE Europe

Conference

Conference2021 23rd European Conference on Power Electronics and Applications, EPE 2021 ECCE Europe
CountryBelgium
CityGent
Period6/09/2110/09/21

Bibliographical note

Funding Information:
ACKNOWLEDGEMENT This work was supported by project HiPERFORM System. This project has received funding from the Ecsel JU under grant agreement no 783174. The ECSEL JU receives support from the European Union’s horizon 2020 research and innovation programme and Austria, Spain, Belgium, Germany, Slovakia, Italy, Netherlands, Slovenia. We also acknowledge Flanders Make for the support to our team.

Funding Information:
This work was supported by project HiPERFORM System. This project has received funding from the Ecsel JU under grant agreement no 783174. The ECSEL JU receives support from the European Union's horizon 2020 research and innovation programme and Austria, Spain, Belgium, Germany, Slovakia, Italy, Netherlands, Slovenia. We also acknowledge Flanders Make for the support to our team.

Publisher Copyright:
© 2021 IEEE.

Copyright:
Copyright 2022 Elsevier B.V., All rights reserved.

Keywords

  • «CC-CV charging»
  • «Current Sharing»
  • «Electric vehicle On-Board charger»
  • «Load shedding»
  • «Modular structure»

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