Simulation-Assisted Design Process of a 22 kW Wireless Power Transfer System Using Three-Phase Coil Coupling for EVs

The objective of this paper is to study a 22 kW high-power wireless power transfer (WPT) system for battery charging in electric vehicles (EVs). The proposed WPT system consists of a three-phase half-bridge LC–LC (i.e., primary LC/secondary LC) resonant power converter and a three-phase sandwich wou...

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Autores principales:	Chia-Hsuan Wu, Ching-Ming Lai, Tomokazu Mishima, Zheng-Bo Liang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	22 kW wireless power transfer (WPT) system three-phase (LC) (LC) resonant converter sandwich coil coupling circuit model CST STUDIO SUITE™ PSIM Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/54301644fd7343e5a8364062d2956acb
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spelling	oai:doaj.org-article:54301644fd7343e5a8364062d2956acb2021-11-11T19:49:41ZSimulation-Assisted Design Process of a 22 kW Wireless Power Transfer System Using Three-Phase Coil Coupling for EVs10.3390/su1321122572071-1050https://doaj.org/article/54301644fd7343e5a8364062d2956acb2021-11-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/21/12257https://doaj.org/toc/2071-1050The objective of this paper is to study a 22 kW high-power wireless power transfer (WPT) system for battery charging in electric vehicles (EVs). The proposed WPT system consists of a three-phase half-bridge LC–LC (i.e., primary LC/secondary LC) resonant power converter and a three-phase sandwich wound coil set (transmitter, Tx; receiver, Rx). To transfer power effectively with a 250 mm air gap, the WPT system uses three-phase, sandwich-wound Tx/Rx coils to minimize the magnetic flux leakage effect and increase the power transfer efficiency (PTE). Furthermore, the relationship of the coupling coefficient between the Tx/Rx coils is complicated, as the coupling coefficient is not only dominated by the coupling strength of the primary and secondary sides but also relates to the primary or secondary three-phase magnetic coupling effects. In order to analyze the proposed three-phase WPT system, a detailed equivalent circuit model is derived for a better understanding. To give a design reference, a novel coil design method that can achieve high conversion efficiency for a high-power WPT system was developed based on a simulation-assisted design procedure. A pair of magnetically coupled Tx and Rx coils and the circuit parameters of the three-phase half-bridge LC–LC resonant converter for a 22 kW WPT system are adjusted through PSIM and CST STUDIO SUITE™ simulation to execute the derivation of the design formulas. Finally, the system achieved a PTE of 93.47% at an 85 kHz operating frequency with a 170 mm air gap between the coils. The results verify the feasibility of a simulation-assisted design in which the developed coils can comply with a high-power and high-efficiency WPT system in addition to a size reduction.Chia-Hsuan WuChing-Ming LaiTomokazu MishimaZheng-Bo LiangMDPI AGarticle22 kW wireless power transfer (WPT) systemthree-phase (LC) (LC) resonant convertersandwich coil couplingcircuit modelCST STUDIO SUITE™PSIMEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 12257, p 12257 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	22 kW wireless power transfer (WPT) system three-phase (LC) (LC) resonant converter sandwich coil coupling circuit model CST STUDIO SUITE™ PSIM Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
spellingShingle	22 kW wireless power transfer (WPT) system three-phase (LC) (LC) resonant converter sandwich coil coupling circuit model CST STUDIO SUITE™ PSIM Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Chia-Hsuan Wu Ching-Ming Lai Tomokazu Mishima Zheng-Bo Liang Simulation-Assisted Design Process of a 22 kW Wireless Power Transfer System Using Three-Phase Coil Coupling for EVs
description	The objective of this paper is to study a 22 kW high-power wireless power transfer (WPT) system for battery charging in electric vehicles (EVs). The proposed WPT system consists of a three-phase half-bridge LC–LC (i.e., primary LC/secondary LC) resonant power converter and a three-phase sandwich wound coil set (transmitter, Tx; receiver, Rx). To transfer power effectively with a 250 mm air gap, the WPT system uses three-phase, sandwich-wound Tx/Rx coils to minimize the magnetic flux leakage effect and increase the power transfer efficiency (PTE). Furthermore, the relationship of the coupling coefficient between the Tx/Rx coils is complicated, as the coupling coefficient is not only dominated by the coupling strength of the primary and secondary sides but also relates to the primary or secondary three-phase magnetic coupling effects. In order to analyze the proposed three-phase WPT system, a detailed equivalent circuit model is derived for a better understanding. To give a design reference, a novel coil design method that can achieve high conversion efficiency for a high-power WPT system was developed based on a simulation-assisted design procedure. A pair of magnetically coupled Tx and Rx coils and the circuit parameters of the three-phase half-bridge LC–LC resonant converter for a 22 kW WPT system are adjusted through PSIM and CST STUDIO SUITE™ simulation to execute the derivation of the design formulas. Finally, the system achieved a PTE of 93.47% at an 85 kHz operating frequency with a 170 mm air gap between the coils. The results verify the feasibility of a simulation-assisted design in which the developed coils can comply with a high-power and high-efficiency WPT system in addition to a size reduction.
format	article
author	Chia-Hsuan Wu Ching-Ming Lai Tomokazu Mishima Zheng-Bo Liang
author_facet	Chia-Hsuan Wu Ching-Ming Lai Tomokazu Mishima Zheng-Bo Liang
author_sort	Chia-Hsuan Wu
title	Simulation-Assisted Design Process of a 22 kW Wireless Power Transfer System Using Three-Phase Coil Coupling for EVs
title_short	Simulation-Assisted Design Process of a 22 kW Wireless Power Transfer System Using Three-Phase Coil Coupling for EVs
title_full	Simulation-Assisted Design Process of a 22 kW Wireless Power Transfer System Using Three-Phase Coil Coupling for EVs
title_fullStr	Simulation-Assisted Design Process of a 22 kW Wireless Power Transfer System Using Three-Phase Coil Coupling for EVs
title_full_unstemmed	Simulation-Assisted Design Process of a 22 kW Wireless Power Transfer System Using Three-Phase Coil Coupling for EVs
title_sort	simulation-assisted design process of a 22 kw wireless power transfer system using three-phase coil coupling for evs
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/54301644fd7343e5a8364062d2956acb
work_keys_str_mv	AT chiahsuanwu simulationassisteddesignprocessofa22kwwirelesspowertransfersystemusingthreephasecoilcouplingforevs AT chingminglai simulationassisteddesignprocessofa22kwwirelesspowertransfersystemusingthreephasecoilcouplingforevs AT tomokazumishima simulationassisteddesignprocessofa22kwwirelesspowertransfersystemusingthreephasecoilcouplingforevs AT zhengboliang simulationassisteddesignprocessofa22kwwirelesspowertransfersystemusingthreephasecoilcouplingforevs
_version_	1718431408775495680

Simulation-Assisted Design Process of a 22 kW Wireless Power Transfer System Using Three-Phase Coil Coupling for EVs

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