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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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) |
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finite element analysis magnetic resonance obstacle wireless power transmission Technology T |
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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 |
_version_ |
1718412358875873280 |