A Cost-effective Magnetic Coupler Design with Hexagonal Coils for Electric Vehicle Wireless Charging Systems

H. S. Wang, K. W.E. Cheng

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Recent engineering investigations tend to focus on the cost-effectiveness of wireless power transfer (WPT) in electric vehicles (EVs). One promising method is to save raw material usage from the magnetic coupler part. LITZ wire is widely used in EV wireless charging systems, which is more expensive than conventional wires. It is feasible to save LITZ wire usage with a delicate magnetic coupler design. This article presents a configurable magnetic coupler to realize constant current (CC) and constant voltage (CV) for wirelessly charging battery-oriented applications. Such a magnetic coupler utilizes hexagonal coils to save raw material usage. Most importantly, the main magnetic coupling between the transmitting and receiving coil can be enhanced. And the undesirable magnetic coupling between the source and receiving coil can be reduced. Simulation validation of coils is conducted through finite element analysis (FEA) with the help of ANSYS Maxwell. Circuit analysis is conducted to verify the CC and CV characteristics theoretically.

Original languageEnglish
Title of host publicationProceedings of the 9th International Conference on Power Electronics Systems and Applications, PESA 2022
EditorsKa-wai Eric Cheng
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665486682
DOIs
Publication statusPublished - Sept 2022
Event9th International Conference on Power Electronics Systems and Applications, PESA 2022 - Hong Kong, Hong Kong
Duration: 20 Sept 202222 Sept 2022

Publication series

NameProceedings of the 9th International Conference on Power Electronics Systems and Applications, PESA 2022

Conference

Conference9th International Conference on Power Electronics Systems and Applications, PESA 2022
Country/TerritoryHong Kong
CityHong Kong
Period20/09/2222/09/22

Keywords

  • Couplers
  • electric vehicles
  • inductive power transfer
  • wireless power transmission

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Optimization
  • Energy Engineering and Power Technology

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