Effects of Electro-Magnetic Properties of Obstacles in Magnetic Resonant Wireless Power Transfer

Magnetic resonant wireless power transmission (MRWPT) is a method of transmitting power over a long distance at a specific frequency. Because this system uses an alternating magnetic field, if an object with electrical/magnetic properties is placed between the transmit and receive coils, this will h...

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Autores principales: Ho-Yeong Lee, Sang-Hyeon Im, Gwan-Soo Park
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Lenguaje:EN
Publicado: MDPI AG 2021
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Acceso en línea:https://doaj.org/article/83117a33d8324e6a9454d185c3a47587
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spelling oai:doaj.org-article:83117a33d8324e6a9454d185c3a475872021-11-25T17:25:48ZEffects of Electro-Magnetic Properties of Obstacles in Magnetic Resonant Wireless Power Transfer10.3390/en142274691996-1073https://doaj.org/article/83117a33d8324e6a9454d185c3a475872021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7469https://doaj.org/toc/1996-1073Magnetic resonant wireless power transmission (MRWPT) is a method of transmitting power over a long distance at a specific frequency. Because this system uses an alternating magnetic field, if an object with electrical/magnetic properties is placed between the transmit and receive coils, this will have a significant impact on the power transfer. In this paper, the effect of an obstacle located between two coils on the resonance frequency and transmission power is analyzed. A wireless power transmission system with a resonant frequency of 20 kHz was designed, and ferrite, aluminum, and carbon steel were selected as obstacles with permeability or conductivity. After simulating the system with finite element analysis (FEA) with these obstacles, the results were verified through actual experiments. The results show that the permeability of the obstacle decreases the resonant frequency, and the conductivity increases the resonant frequency and greatly reduces the output power. In addition, part of reduced output could be recovered by adjusting the frequency.Ho-Yeong LeeSang-Hyeon ImGwan-Soo ParkMDPI AGarticlefinite element analysismagnetic resonanceobstaclewireless power transmissionTechnologyTENEnergies, Vol 14, Iss 7469, p 7469 (2021)
institution DOAJ
collection DOAJ
language EN
topic finite element analysis
magnetic resonance
obstacle
wireless power transmission
Technology
T
spellingShingle finite element analysis
magnetic resonance
obstacle
wireless power transmission
Technology
T
Ho-Yeong Lee
Sang-Hyeon Im
Gwan-Soo Park
Effects of Electro-Magnetic Properties of Obstacles in Magnetic Resonant Wireless Power Transfer
description Magnetic resonant wireless power transmission (MRWPT) is a method of transmitting power over a long distance at a specific frequency. Because this system uses an alternating magnetic field, if an object with electrical/magnetic properties is placed between the transmit and receive coils, this will have a significant impact on the power transfer. In this paper, the effect of an obstacle located between two coils on the resonance frequency and transmission power is analyzed. A wireless power transmission system with a resonant frequency of 20 kHz was designed, and ferrite, aluminum, and carbon steel were selected as obstacles with permeability or conductivity. After simulating the system with finite element analysis (FEA) with these obstacles, the results were verified through actual experiments. The results show that the permeability of the obstacle decreases the resonant frequency, and the conductivity increases the resonant frequency and greatly reduces the output power. In addition, part of reduced output could be recovered by adjusting the frequency.
format article
author Ho-Yeong Lee
Sang-Hyeon Im
Gwan-Soo Park
author_facet Ho-Yeong Lee
Sang-Hyeon Im
Gwan-Soo Park
author_sort Ho-Yeong Lee
title Effects of Electro-Magnetic Properties of Obstacles in Magnetic Resonant Wireless Power Transfer
title_short Effects of Electro-Magnetic Properties of Obstacles in Magnetic Resonant Wireless Power Transfer
title_full Effects of Electro-Magnetic Properties of Obstacles in Magnetic Resonant Wireless Power Transfer
title_fullStr Effects of Electro-Magnetic Properties of Obstacles in Magnetic Resonant Wireless Power Transfer
title_full_unstemmed Effects of Electro-Magnetic Properties of Obstacles in Magnetic Resonant Wireless Power Transfer
title_sort effects of electro-magnetic properties of obstacles in magnetic resonant wireless power transfer
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/83117a33d8324e6a9454d185c3a47587
work_keys_str_mv AT hoyeonglee effectsofelectromagneticpropertiesofobstaclesinmagneticresonantwirelesspowertransfer
AT sanghyeonim effectsofelectromagneticpropertiesofobstaclesinmagneticresonantwirelesspowertransfer
AT gwansoopark effectsofelectromagneticpropertiesofobstaclesinmagneticresonantwirelesspowertransfer
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