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Optimized NFC Circuit and Coil Design for Wireless Power Transfer with 2D Free-Positioning and Low Load Sensibility †
This paper proposes a method for optimizing and designing a wireless power transfer system operating at [Formula: see text]. It can be used as guidelines for designing coils for the new-trending technology that enables NFC devices to not only to communicate but also to charge. Since NFC wireless cha...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8659795/ https://www.ncbi.nlm.nih.gov/pubmed/34884078 http://dx.doi.org/10.3390/s21238074 |
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author | Buchmeier, Guilherme Germano Takacs, Alexandru Dragomirescu, Daniela Alarcon Ramos, Juvenal Fortes Montilla, Amaia |
author_facet | Buchmeier, Guilherme Germano Takacs, Alexandru Dragomirescu, Daniela Alarcon Ramos, Juvenal Fortes Montilla, Amaia |
author_sort | Buchmeier, Guilherme Germano |
collection | PubMed |
description | This paper proposes a method for optimizing and designing a wireless power transfer system operating at [Formula: see text]. It can be used as guidelines for designing coils for the new-trending technology that enables NFC devices to not only to communicate but also to charge. Since NFC wireless charging is an emerging technology, it is of interest to propose optimizations and a dedicated circuit design for such systems. This work proposes an optimization procedure to calculate the dimensions of a transmitter and receiver pair that assures the highest efficiency while considering all possible positions of a receiver that is placed on a desired surface. This procedure seeks to facilitate and automate the design of rectangular-shaped coils, whereas the literature proposes mainly square-shaped coils. Afterwards, a circuit analysis was conducted, and the series-parallel compensation network is proposed as the most promising topology of the receiver to assure a low efficiency sensibility to load variations for [Formula: see text] wireless power transfer systems. A pair of optimized transmitter and receiver coils is prototyped, and the experimental results are tested against the theory. The transmitter of [Formula: see text] and receiver of [Formula: see text] are separated by [Formula: see text]. The receiver can move on a surface of [Formula: see text] and the load can vary from [Formula: see text] to [Formula: see text] while assuring a minimum and maximum efficiency of [Formula: see text] and [Formula: see text] , respectively. |
format | Online Article Text |
id | pubmed-8659795 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-86597952021-12-10 Optimized NFC Circuit and Coil Design for Wireless Power Transfer with 2D Free-Positioning and Low Load Sensibility † Buchmeier, Guilherme Germano Takacs, Alexandru Dragomirescu, Daniela Alarcon Ramos, Juvenal Fortes Montilla, Amaia Sensors (Basel) Article This paper proposes a method for optimizing and designing a wireless power transfer system operating at [Formula: see text]. It can be used as guidelines for designing coils for the new-trending technology that enables NFC devices to not only to communicate but also to charge. Since NFC wireless charging is an emerging technology, it is of interest to propose optimizations and a dedicated circuit design for such systems. This work proposes an optimization procedure to calculate the dimensions of a transmitter and receiver pair that assures the highest efficiency while considering all possible positions of a receiver that is placed on a desired surface. This procedure seeks to facilitate and automate the design of rectangular-shaped coils, whereas the literature proposes mainly square-shaped coils. Afterwards, a circuit analysis was conducted, and the series-parallel compensation network is proposed as the most promising topology of the receiver to assure a low efficiency sensibility to load variations for [Formula: see text] wireless power transfer systems. A pair of optimized transmitter and receiver coils is prototyped, and the experimental results are tested against the theory. The transmitter of [Formula: see text] and receiver of [Formula: see text] are separated by [Formula: see text]. The receiver can move on a surface of [Formula: see text] and the load can vary from [Formula: see text] to [Formula: see text] while assuring a minimum and maximum efficiency of [Formula: see text] and [Formula: see text] , respectively. MDPI 2021-12-02 /pmc/articles/PMC8659795/ /pubmed/34884078 http://dx.doi.org/10.3390/s21238074 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Buchmeier, Guilherme Germano Takacs, Alexandru Dragomirescu, Daniela Alarcon Ramos, Juvenal Fortes Montilla, Amaia Optimized NFC Circuit and Coil Design for Wireless Power Transfer with 2D Free-Positioning and Low Load Sensibility † |
title | Optimized NFC Circuit and Coil Design for Wireless Power Transfer with 2D Free-Positioning and Low Load Sensibility † |
title_full | Optimized NFC Circuit and Coil Design for Wireless Power Transfer with 2D Free-Positioning and Low Load Sensibility † |
title_fullStr | Optimized NFC Circuit and Coil Design for Wireless Power Transfer with 2D Free-Positioning and Low Load Sensibility † |
title_full_unstemmed | Optimized NFC Circuit and Coil Design for Wireless Power Transfer with 2D Free-Positioning and Low Load Sensibility † |
title_short | Optimized NFC Circuit and Coil Design for Wireless Power Transfer with 2D Free-Positioning and Low Load Sensibility † |
title_sort | optimized nfc circuit and coil design for wireless power transfer with 2d free-positioning and low load sensibility † |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8659795/ https://www.ncbi.nlm.nih.gov/pubmed/34884078 http://dx.doi.org/10.3390/s21238074 |
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