A hybrid shielding structure for reduction of the leakage magnetic field in wireless power transfer system-Reference-Cited by-同舟云学术

A hybrid shielding structure for reduction of the leakage magnetic field in wireless power transfer system

Published:2018-09-26 Issue:10 Volume:60 Page:2547-2551
ISSN:0895-2477
Container-title:Microwave and Optical Technology Letters
language:en
Short-container-title:Micro & Optical Tech Letters

Author:

Kim Jongchan¹,Jeong Minjoo²^ORCID,Hong Icpyo³,Rhee Seungyeop⁴,Cho Inkui⁵,Kim Nam²

Affiliation:

1. Korea Communications Agency, 760, Bitgaram‐ro, Naju‐si, Jeollanam‐do 58324, Republic of Korea

2. Department of Information & Communication Engineering, Chungbuk National University, 1, Chungdae‐ro, Seowon‐gu, cheongju‐si, Chungcheongbuk‐do 28644, Republic of Korea.

3. Department of Information & Communication Engineering, Kongju National University, 1223‐24, Cheonan‐daero, Seobuk‐gu, Cheonan‐si, Chungcheongnam‐do 31080, Republic of Korea.

4. Department of Electronic Communication Engineering, Chonnam National University, 50, Daehak‐ro, Yeosu‐si, Jeollanam‐do 59626, Republic of Korea.

5. Radio Technology Research Department, Electronics and Telecommunications Research Institute, 218, Gajeong‐ro, Yuseong‐gu, Daejeon 34129, Republic of Korea.

Abstract

AbstractIn this paper, we propose a hybrid shielding structure for the reduction of the leakage magnetic field in the wireless power transfer (WPT) system operating at 175 kHz. This structure consists of ferrite slab staked on the aluminum plate. The improvement in the magnetic field reduction is achieved, while minimizing the power transfer loss by optimizing the design parameters. The power transfer efficiency and leakage magnetic field are analyzed and verified through simulation and experiment. The experimental results show 77% power transfer efficiency with proposed structure, while the normalized leakage magnetic field strength was reduced up to 80% compared with the conventional shielding structures.

Publisher

Wiley

Subject

Electrical and Electronic Engineering,Condensed Matter Physics,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials

Link

https://onlinelibrary.wiley.com/doi/pdf/10.1002/mop.31372

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4. KimHS SongC KimJH KimJS KimJH. Shielded coil structure suppressing leakage magnetic field from 100 W‐class wireless power transfer system with higher efficiency. Paper presented at: Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies Systems and Applications (IMWS) 2012:83‐86 Kyoto Japan.

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