Reduction in Human Interaction with Magnetic Resonant Coupling WPT Systems with Grounded Loop

Wireless power transfer (WPT) systems have attracted considerable attention in relation to providing a reliable and convenient power supply. Among the challenges in this area are maintaining the performance of the WPT system with the presence of a human body and minimizing the induced physical quant...

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Autores principales:	Xianyi Duan, Junqing Lan, Yinliang Diao, Jose Gomez-Tames, Hiroshi Hirayama, Masashi Hotta, George Fischer, Akimasa Hirata
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	spiral coil wireless power transfer grounded loop human safety specific absorption rate (SAR) computational dosimetry Technology T
Acceso en línea:	https://doaj.org/article/aced7aaaae424ff3b664d1c97544086d
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spelling	oai:doaj.org-article:aced7aaaae424ff3b664d1c97544086d2021-11-11T16:00:40ZReduction in Human Interaction with Magnetic Resonant Coupling WPT Systems with Grounded Loop10.3390/en142172531996-1073https://doaj.org/article/aced7aaaae424ff3b664d1c97544086d2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7253https://doaj.org/toc/1996-1073Wireless power transfer (WPT) systems have attracted considerable attention in relation to providing a reliable and convenient power supply. Among the challenges in this area are maintaining the performance of the WPT system with the presence of a human body and minimizing the induced physical quantities in the human body. This study proposes a magnetic resonant coupling WPT (MRC-WPT) system that utilizes a resonator with a grounded loop to mitigate its interaction with a human body and achieve a high-efficiency power transfer at a short range. Our proposed system is based on a grounded loop to reduce the leakage of the electric field, resulting in less interaction with the human body. As a result, a transmission efficiency higher than 70% is achieved at a transmission distance of approximately 25 cm. Under the maximum-efficiency conditions of the WPT system, the use of a resonator with a grounded loop reduces the induced electric field, the peak spatial-average specific absorption rate (<i>ps</i>SAR), and the whole-body averaged SAR by 43.6%, 69.7%, and 65.6%, respectively. The maximum permissible input power values for the proposed WPT systems are 40 and 33.5 kW, as prescribed in the International Commission of Non-Ionizing Radiation Protection (ICNIRP) guidelines to comply with the limits for local and whole-body average SAR.Xianyi DuanJunqing LanYinliang DiaoJose Gomez-TamesHiroshi HirayamaMasashi HottaGeorge FischerAkimasa HirataMDPI AGarticlespiral coilwireless power transfergrounded loophuman safetyspecific absorption rate (SAR)computational dosimetryTechnologyTENEnergies, Vol 14, Iss 7253, p 7253 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	spiral coil wireless power transfer grounded loop human safety specific absorption rate (SAR) computational dosimetry Technology T
spellingShingle	spiral coil wireless power transfer grounded loop human safety specific absorption rate (SAR) computational dosimetry Technology T Xianyi Duan Junqing Lan Yinliang Diao Jose Gomez-Tames Hiroshi Hirayama Masashi Hotta George Fischer Akimasa Hirata Reduction in Human Interaction with Magnetic Resonant Coupling WPT Systems with Grounded Loop
description	Wireless power transfer (WPT) systems have attracted considerable attention in relation to providing a reliable and convenient power supply. Among the challenges in this area are maintaining the performance of the WPT system with the presence of a human body and minimizing the induced physical quantities in the human body. This study proposes a magnetic resonant coupling WPT (MRC-WPT) system that utilizes a resonator with a grounded loop to mitigate its interaction with a human body and achieve a high-efficiency power transfer at a short range. Our proposed system is based on a grounded loop to reduce the leakage of the electric field, resulting in less interaction with the human body. As a result, a transmission efficiency higher than 70% is achieved at a transmission distance of approximately 25 cm. Under the maximum-efficiency conditions of the WPT system, the use of a resonator with a grounded loop reduces the induced electric field, the peak spatial-average specific absorption rate (<i>ps</i>SAR), and the whole-body averaged SAR by 43.6%, 69.7%, and 65.6%, respectively. The maximum permissible input power values for the proposed WPT systems are 40 and 33.5 kW, as prescribed in the International Commission of Non-Ionizing Radiation Protection (ICNIRP) guidelines to comply with the limits for local and whole-body average SAR.
format	article
author	Xianyi Duan Junqing Lan Yinliang Diao Jose Gomez-Tames Hiroshi Hirayama Masashi Hotta George Fischer Akimasa Hirata
author_facet	Xianyi Duan Junqing Lan Yinliang Diao Jose Gomez-Tames Hiroshi Hirayama Masashi Hotta George Fischer Akimasa Hirata
author_sort	Xianyi Duan
title	Reduction in Human Interaction with Magnetic Resonant Coupling WPT Systems with Grounded Loop
title_short	Reduction in Human Interaction with Magnetic Resonant Coupling WPT Systems with Grounded Loop
title_full	Reduction in Human Interaction with Magnetic Resonant Coupling WPT Systems with Grounded Loop
title_fullStr	Reduction in Human Interaction with Magnetic Resonant Coupling WPT Systems with Grounded Loop
title_full_unstemmed	Reduction in Human Interaction with Magnetic Resonant Coupling WPT Systems with Grounded Loop
title_sort	reduction in human interaction with magnetic resonant coupling wpt systems with grounded loop
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/aced7aaaae424ff3b664d1c97544086d
work_keys_str_mv	AT xianyiduan reductioninhumaninteractionwithmagneticresonantcouplingwptsystemswithgroundedloop AT junqinglan reductioninhumaninteractionwithmagneticresonantcouplingwptsystemswithgroundedloop AT yinliangdiao reductioninhumaninteractionwithmagneticresonantcouplingwptsystemswithgroundedloop AT josegomeztames reductioninhumaninteractionwithmagneticresonantcouplingwptsystemswithgroundedloop AT hiroshihirayama reductioninhumaninteractionwithmagneticresonantcouplingwptsystemswithgroundedloop AT masashihotta reductioninhumaninteractionwithmagneticresonantcouplingwptsystemswithgroundedloop AT georgefischer reductioninhumaninteractionwithmagneticresonantcouplingwptsystemswithgroundedloop AT akimasahirata reductioninhumaninteractionwithmagneticresonantcouplingwptsystemswithgroundedloop
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Reduction in Human Interaction with Magnetic Resonant Coupling WPT Systems with Grounded Loop

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