Overview of Electrically Conductive and Active Shielding for Wireless Power Transfer with a Polyphase Wireless Electric Vehicle Charging Study

Donovin D. Lewis, Oluwaseun A. Badewa, Omer Onar, Mostak Mohammad, John F. Eastham, Dan M. Ionel

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding

Abstract

The development and deployment of wireless power transfer (WPT) is increasing across industries including applications in healthcare, sensing and telecommunications, and electric vehicle charging due to its increased mobility and convenience. An important aspect of wireless power transfer is shielding to limit the intensity of electromagnetic fields (EMF) within external regions to protect users and nearby technology. Within this paper, the classifications and recent developments in shielding technologies are reviewed with discussion on potential benefits and drawbacks towards application for wireless charging of electric vehicles (EV). Additionally, a design study is proposed and simulated in 3D FEA for a novel active shield to substantially reduce magnetic field emissions of a high-power, high-frequency rotating-field 3-phase electromagnetic coupler for quickly charging electric vehicles. The active shield, designed to reduce Z-axis emissions, was found to be highly effective, reducing maximum EMF emissions by 83% in aligned static operation and by 50% with lateral misalignment. Active shielding was also found to strongly mitigate the impact of lateral misalignment at each studied partial alignment.

Original languageEnglish
Title of host publication2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023
Place of PublicationU. S. A.
PublisherIEEE
Pages1731-1736
Number of pages6
ISBN (Electronic)9798350316445
DOIs
Publication statusPublished - 29 Dec 2023
Event2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023 - Nashville, USA United States
Duration: 29 Oct 20232 Nov 2023

Publication series

Name2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023

Conference

Conference2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023
Country/TerritoryUSA United States
CityNashville
Period29/10/232/11/23

Funding

This work was supported by the National Science Foundation (NSF) Graduate Research Fellowship under Grant No. 1839289. Any findings and conclusions expressed herein are those of the authors and do not necessarily reflect the views of the NSF. The support of ANSYS Inc., and University of Kentucky the L. Stanley Pigman Chair in Power endowment is also gratefully acknowledged.

FundersFunder number
National Science Foundation1839289

    Keywords

    • electric vehicle
    • electromagnetic field (EMF) emissions
    • inductive charging
    • shielding effectiveness
    • Wireless power transfer

    ASJC Scopus subject areas

    • Energy Engineering and Power Technology
    • Renewable Energy, Sustainability and the Environment
    • Electrical and Electronic Engineering

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