Comprehensive Analysis of Side-Placed Metamaterials in Wireless Power Transfer System
In this article, we propose the side-placed negative-permeability metamaterial (NPM) and zero-permeability metamaterial (ZPM) in the wireless power transfer (WPT) system to simultaneously enhance the level of efficiency and meet the electromagnetic field (EMF) safety regulations. A theoretical analy...
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doaj-1c2cdc8bd4cb490aa68891b102dba0a62021-03-30T04:05:56ZengIEEEIEEE Access2169-35362020-01-01815290015290810.1109/ACCESS.2020.30174929170531Comprehensive Analysis of Side-Placed Metamaterials in Wireless Power Transfer SystemConghui Lu0https://orcid.org/0000-0002-7539-007XXiutao Huang1https://orcid.org/0000-0002-8670-3027Xiong Tao2Cancan Rong3https://orcid.org/0000-0002-8836-0806Minghai Liu4https://orcid.org/0000-0002-8065-4404School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, ChinaSchool of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, ChinaSchool of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, ChinaSchool of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, ChinaSchool of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, ChinaIn this article, we propose the side-placed negative-permeability metamaterial (NPM) and zero-permeability metamaterial (ZPM) in the wireless power transfer (WPT) system to simultaneously enhance the level of efficiency and meet the electromagnetic field (EMF) safety regulations. A theoretical analysis, simulation, and experiment are conducted to verify the feasibility of the proposed system model. Based on the principle of magneto-inductive waves (MIWs) and the shielding theory, the transmission characteristics of the WPT system without and with two NPM slabs, two ZPM slabs, and the combination of NPM and ZPM slabs are analyzed. The results demonstrate that the ZPM slabs and the combination of NPM and ZPM slabs have a high efficiency improvement when the transfer distance is located under 40 cm and exceeds 40 cm, respectively. Both methods can control the EMF leakage. Moreover, the side-placed metamaterial exhibits tolerance to the misalignment of the coil. Finally, comparative studies on the ZPM slab and aluminum are carried out. The experimental and simulation results show that the ZPM slab performs better than aluminum.https://ieeexplore.ieee.org/document/9170531/Zero-permeabilitynegative-permeabilitycombinationincrease efficiencyshield magnetic fieldMIW |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Conghui Lu Xiutao Huang Xiong Tao Cancan Rong Minghai Liu |
spellingShingle |
Conghui Lu Xiutao Huang Xiong Tao Cancan Rong Minghai Liu Comprehensive Analysis of Side-Placed Metamaterials in Wireless Power Transfer System IEEE Access Zero-permeability negative-permeability combination increase efficiency shield magnetic field MIW |
author_facet |
Conghui Lu Xiutao Huang Xiong Tao Cancan Rong Minghai Liu |
author_sort |
Conghui Lu |
title |
Comprehensive Analysis of Side-Placed Metamaterials in Wireless Power Transfer System |
title_short |
Comprehensive Analysis of Side-Placed Metamaterials in Wireless Power Transfer System |
title_full |
Comprehensive Analysis of Side-Placed Metamaterials in Wireless Power Transfer System |
title_fullStr |
Comprehensive Analysis of Side-Placed Metamaterials in Wireless Power Transfer System |
title_full_unstemmed |
Comprehensive Analysis of Side-Placed Metamaterials in Wireless Power Transfer System |
title_sort |
comprehensive analysis of side-placed metamaterials in wireless power transfer system |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2020-01-01 |
description |
In this article, we propose the side-placed negative-permeability metamaterial (NPM) and zero-permeability metamaterial (ZPM) in the wireless power transfer (WPT) system to simultaneously enhance the level of efficiency and meet the electromagnetic field (EMF) safety regulations. A theoretical analysis, simulation, and experiment are conducted to verify the feasibility of the proposed system model. Based on the principle of magneto-inductive waves (MIWs) and the shielding theory, the transmission characteristics of the WPT system without and with two NPM slabs, two ZPM slabs, and the combination of NPM and ZPM slabs are analyzed. The results demonstrate that the ZPM slabs and the combination of NPM and ZPM slabs have a high efficiency improvement when the transfer distance is located under 40 cm and exceeds 40 cm, respectively. Both methods can control the EMF leakage. Moreover, the side-placed metamaterial exhibits tolerance to the misalignment of the coil. Finally, comparative studies on the ZPM slab and aluminum are carried out. The experimental and simulation results show that the ZPM slab performs better than aluminum. |
topic |
Zero-permeability negative-permeability combination increase efficiency shield magnetic field MIW |
url |
https://ieeexplore.ieee.org/document/9170531/ |
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