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Coil Positioning for Wireless Power Transfer System of Automatic Guided Vehicle Based on Magnetic Sensing

As an auxiliary function of the wireless power transfer (WPT) system, coil positioning can solve the power and efficiency degradation during power transmission caused by misalignment of the magnetic coupler. In this paper, a Hall sensor array is used to measure the change of magnetic flux density. B...

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Autores principales: Liang, Ce, Zhang, Yanchi, Li, Zhonggang, Yuan, Feng, Yang, Guang, Song, Kai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7571003/
https://www.ncbi.nlm.nih.gov/pubmed/32947993
http://dx.doi.org/10.3390/s20185304
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author Liang, Ce
Zhang, Yanchi
Li, Zhonggang
Yuan, Feng
Yang, Guang
Song, Kai
author_facet Liang, Ce
Zhang, Yanchi
Li, Zhonggang
Yuan, Feng
Yang, Guang
Song, Kai
author_sort Liang, Ce
collection PubMed
description As an auxiliary function of the wireless power transfer (WPT) system, coil positioning can solve the power and efficiency degradation during power transmission caused by misalignment of the magnetic coupler. In this paper, a Hall sensor array is used to measure the change of magnetic flux density. By comparing the multisensor data fusion results with the preset data obtained from the coil alignment, the real-time accurate positioning of the receiving coil can be realized. Firstly, the positioning model of the receiving coil is built and the variation of magnetic flux density with the coil misalignment is analyzed. Secondly, the arrangement of the Planar 8-direction symmetric sensor array and the positioning algorithm based on data fusion of magnetic flux density variations are proposed. In order to avoid coil positioning misalignment caused by the unstable magnetic field distribution which is actually affected by the change of mutual inductance during automatic guided vehicle (AGV) alignment, the constant current strategy of primary and secondary sides is proposed. Finally, the coil positioning experimental platform is built. The experimental results show that the coil positioning method proposed in this paper has high accuracy, and the positioning error is within 4 cm.
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spelling pubmed-75710032020-10-28 Coil Positioning for Wireless Power Transfer System of Automatic Guided Vehicle Based on Magnetic Sensing Liang, Ce Zhang, Yanchi Li, Zhonggang Yuan, Feng Yang, Guang Song, Kai Sensors (Basel) Article As an auxiliary function of the wireless power transfer (WPT) system, coil positioning can solve the power and efficiency degradation during power transmission caused by misalignment of the magnetic coupler. In this paper, a Hall sensor array is used to measure the change of magnetic flux density. By comparing the multisensor data fusion results with the preset data obtained from the coil alignment, the real-time accurate positioning of the receiving coil can be realized. Firstly, the positioning model of the receiving coil is built and the variation of magnetic flux density with the coil misalignment is analyzed. Secondly, the arrangement of the Planar 8-direction symmetric sensor array and the positioning algorithm based on data fusion of magnetic flux density variations are proposed. In order to avoid coil positioning misalignment caused by the unstable magnetic field distribution which is actually affected by the change of mutual inductance during automatic guided vehicle (AGV) alignment, the constant current strategy of primary and secondary sides is proposed. Finally, the coil positioning experimental platform is built. The experimental results show that the coil positioning method proposed in this paper has high accuracy, and the positioning error is within 4 cm. MDPI 2020-09-16 /pmc/articles/PMC7571003/ /pubmed/32947993 http://dx.doi.org/10.3390/s20185304 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liang, Ce
Zhang, Yanchi
Li, Zhonggang
Yuan, Feng
Yang, Guang
Song, Kai
Coil Positioning for Wireless Power Transfer System of Automatic Guided Vehicle Based on Magnetic Sensing
title Coil Positioning for Wireless Power Transfer System of Automatic Guided Vehicle Based on Magnetic Sensing
title_full Coil Positioning for Wireless Power Transfer System of Automatic Guided Vehicle Based on Magnetic Sensing
title_fullStr Coil Positioning for Wireless Power Transfer System of Automatic Guided Vehicle Based on Magnetic Sensing
title_full_unstemmed Coil Positioning for Wireless Power Transfer System of Automatic Guided Vehicle Based on Magnetic Sensing
title_short Coil Positioning for Wireless Power Transfer System of Automatic Guided Vehicle Based on Magnetic Sensing
title_sort coil positioning for wireless power transfer system of automatic guided vehicle based on magnetic sensing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7571003/
https://www.ncbi.nlm.nih.gov/pubmed/32947993
http://dx.doi.org/10.3390/s20185304
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