Design and Analysis of a Resonant Reactive Shield for a Wireless Power Electric Vehicle
In this paper, we propose the concept and design methodology for a resonant reactive shield for the reduction of magnetic field leakage from a wireless power transfer (WPT) systems. By using LC resonance, the reactive shield can generate a cancelling magnetic field to reduce the incident magnetic fi...
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Published in | IEEE transactions on microwave theory and techniques Vol. 62; no. 4; pp. 1057 - 1066 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
New York
IEEE
01.04.2014
The Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subjects | |
Online Access | Get full text |
ISSN | 0018-9480 1557-9670 |
DOI | 10.1109/TMTT.2014.2305404 |
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Abstract | In this paper, we propose the concept and design methodology for a resonant reactive shield for the reduction of magnetic field leakage from a wireless power transfer (WPT) systems. By using LC resonance, the reactive shield can generate a cancelling magnetic field to reduce the incident magnetic field from WPT coils and effectively reduce the total magnetic field without consuming additional power. The shielding effectiveness of the resonant reactive shield and its effect on WPT efficiency are analyzed with simulation and measurements. For practical application to wirelessly charged electric vehicles, an automatic tuning system for the resonant reactive shield is also proposed and implemented. The effectiveness of a resonant reactive shielding is verified by experiments in a wirelessly charged electric bus. |
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AbstractList | In this paper, we propose the concept and design methodology for a resonant reactive shield for the reduction of magnetic field leakage from a wireless power transfer (WPT) systems. By using LC resonance, the reactive shield can generate a cancelling magnetic field to reduce the incident magnetic field from WPT coils and effectively reduce the total magnetic field without consuming additional power. The shielding effectiveness of the resonant reactive shield and its effect on WPT efficiency are analyzed with simulation and measurements. For practical application to wirelessly charged electric vehicles, an automatic tuning system for the resonant reactive shield is also proposed and implemented. The effectiveness of a resonant reactive shielding is verified by experiments in a wirelessly charged electric bus. |
Author | Kim, Seonghwan Ahn, Seungyoung Park, Hyun-Ho Kim, Jonghoon Kim, Jingook |
Author_xml | – sequence: 1 givenname: Seonghwan surname: Kim fullname: Kim, Seonghwan organization: Cho Chun Shik Graduate School for Green Transportation, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea – sequence: 2 givenname: Hyun-Ho surname: Park fullname: Park, Hyun-Ho organization: University of Suwon, Hwaseong, Korea – sequence: 3 givenname: Jonghoon surname: Kim fullname: Kim, Jonghoon organization: KAIST, Daejeon, Korea – sequence: 4 givenname: Jingook surname: Kim fullname: Kim, Jingook organization: UNIST, Ulsan, Korea – sequence: 5 givenname: Seungyoung surname: Ahn fullname: Ahn, Seungyoung email: sahn@kaist.ac.kr organization: Cho Chun Shik Graduate School for Green Transportation, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea |
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SubjectTerms | Coils Electric vehicle electromagnetic compatibility (EMC) electromagnetic field electromagnetic shielding Impedance Magnetic noise Magnetic resonance Magnetic separation Magnetic shielding wireless power transfer (WPT) |
Title | Design and Analysis of a Resonant Reactive Shield for a Wireless Power Electric Vehicle |
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