Two-Coil Receiver for Electrical Vehicles in Dynamic Wireless Power Transfer

Dynamic wireless power transfer (DWPT) of electric vehicles (EVs) is the future of urban mobility. The DWPT is often based on a series of short track pads embedded in road pavement that wirelessly transfers electrical energy to EVs equipped with a pickup coil for battery charging. An open problem wi...

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Autores principales:	Tommaso Campi, Silvano Cruciani, Francesca Maradei, Mauro Feliziani
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	automotive coil design dynamic wireless power transfer (DWPT) electric vehicle (EV) electrified transportation e-mobility Technology T
Acceso en línea:	https://doaj.org/article/f13fc0acdf7d4dc3a33b8b12091f58b5
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id	oai:doaj.org-article:f13fc0acdf7d4dc3a33b8b12091f58b5
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spelling	oai:doaj.org-article:f13fc0acdf7d4dc3a33b8b12091f58b52021-11-25T17:28:47ZTwo-Coil Receiver for Electrical Vehicles in Dynamic Wireless Power Transfer10.3390/en142277901996-1073https://doaj.org/article/f13fc0acdf7d4dc3a33b8b12091f58b52021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7790https://doaj.org/toc/1996-1073Dynamic wireless power transfer (DWPT) of electric vehicles (EVs) is the future of urban mobility. The DWPT is often based on a series of short track pads embedded in road pavement that wirelessly transfers electrical energy to EVs equipped with a pickup coil for battery charging. An open problem with this technology is the variation of the coupling factor as a vehicle switches from one transmitting coil to another during its motion. This can cause a significant change in power with possible power spikes and holes. In order to overcome these issues, a new architecture is here proposed based on two pick-up coils mounted in the vehicle underneath. These identical receiver coils are placed in different positions under the vehicle (one in front and the other in the rear) and are activated one at a time so that inductive coupling is always good enough. This innovative configuration has two main advantages: (i) it maintains a nearly constant coupling factor, as well as efficiency and transferred power, as the vehicle moves along the electrified road; (ii) it significantly reduces the cost of road infrastructure. An application is presented to verify the proposed two-coil architecture in comparison with the traditional one-coil. The results of the investigation show the significant improvement achieved in terms of maximum power variation which is nearly stable with the proposed two-coil architecture (only 2.8% variation) while there are many power holes with the traditional single coil architecture. In addition, the number of the required transmitting coils is significantly reduced due to a larger separation between adjacent coils.Tommaso CampiSilvano CrucianiFrancesca MaradeiMauro FelizianiMDPI AGarticleautomotivecoil designdynamic wireless power transfer (DWPT)electric vehicle (EV)electrified transportatione-mobilityTechnologyTENEnergies, Vol 14, Iss 7790, p 7790 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	automotive coil design dynamic wireless power transfer (DWPT) electric vehicle (EV) electrified transportation e-mobility Technology T
spellingShingle	automotive coil design dynamic wireless power transfer (DWPT) electric vehicle (EV) electrified transportation e-mobility Technology T Tommaso Campi Silvano Cruciani Francesca Maradei Mauro Feliziani Two-Coil Receiver for Electrical Vehicles in Dynamic Wireless Power Transfer
description	Dynamic wireless power transfer (DWPT) of electric vehicles (EVs) is the future of urban mobility. The DWPT is often based on a series of short track pads embedded in road pavement that wirelessly transfers electrical energy to EVs equipped with a pickup coil for battery charging. An open problem with this technology is the variation of the coupling factor as a vehicle switches from one transmitting coil to another during its motion. This can cause a significant change in power with possible power spikes and holes. In order to overcome these issues, a new architecture is here proposed based on two pick-up coils mounted in the vehicle underneath. These identical receiver coils are placed in different positions under the vehicle (one in front and the other in the rear) and are activated one at a time so that inductive coupling is always good enough. This innovative configuration has two main advantages: (i) it maintains a nearly constant coupling factor, as well as efficiency and transferred power, as the vehicle moves along the electrified road; (ii) it significantly reduces the cost of road infrastructure. An application is presented to verify the proposed two-coil architecture in comparison with the traditional one-coil. The results of the investigation show the significant improvement achieved in terms of maximum power variation which is nearly stable with the proposed two-coil architecture (only 2.8% variation) while there are many power holes with the traditional single coil architecture. In addition, the number of the required transmitting coils is significantly reduced due to a larger separation between adjacent coils.
format	article
author	Tommaso Campi Silvano Cruciani Francesca Maradei Mauro Feliziani
author_facet	Tommaso Campi Silvano Cruciani Francesca Maradei Mauro Feliziani
author_sort	Tommaso Campi
title	Two-Coil Receiver for Electrical Vehicles in Dynamic Wireless Power Transfer
title_short	Two-Coil Receiver for Electrical Vehicles in Dynamic Wireless Power Transfer
title_full	Two-Coil Receiver for Electrical Vehicles in Dynamic Wireless Power Transfer
title_fullStr	Two-Coil Receiver for Electrical Vehicles in Dynamic Wireless Power Transfer
title_full_unstemmed	Two-Coil Receiver for Electrical Vehicles in Dynamic Wireless Power Transfer
title_sort	two-coil receiver for electrical vehicles in dynamic wireless power transfer
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f13fc0acdf7d4dc3a33b8b12091f58b5
work_keys_str_mv	AT tommasocampi twocoilreceiverforelectricalvehiclesindynamicwirelesspowertransfer AT silvanocruciani twocoilreceiverforelectricalvehiclesindynamicwirelesspowertransfer AT francescamaradei twocoilreceiverforelectricalvehiclesindynamicwirelesspowertransfer AT maurofeliziani twocoilreceiverforelectricalvehiclesindynamicwirelesspowertransfer
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Two-Coil Receiver for Electrical Vehicles in Dynamic Wireless Power Transfer

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