Loss analysis of circular wireless EV charging coupler

Wang, S; Dorrell, DG

Loss analysis of circular wireless EV charging coupler

Wang, S Dorrell, DG

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Publication Type:: Journal Article
Citation:: IEEE Transactions on Magnetics, 2014, 50 (11)
Issue Date:: 2014-11-01

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Field	Value	Language
dc.contributor.author	Wang, S	en_US
dc.contributor.author	Dorrell, DG https://orcid.org/0000-0001-8060-3386	en_US
dc.date.issued	2014-11-01	en_US
dc.identifier.citation	IEEE Transactions on Magnetics, 2014, 50 (11)	en_US
dc.identifier.issn	0018-9464	en_US
dc.identifier.uri	http://hdl.handle.net/10453/32735
dc.description.abstract	© 2014 IEEE. With the demand for mass-produced commercial electric vehicles (EVs) growing over the last few years, the requirement for EV charging will increase, with continued growth as the number of on-road EVs increases. The EV wireless charging technology offers more flexibility than traditional plug-in charging technology for the following reasons: 1) full automation; 2) fast response; 3) high-power capacity; and 4) safety. The charging coupler is the key component in an inductive wireless charging system. This is a medium to high-frequency transformer (20 kHz), the core loss and the copper loss have to be considered carefully since these will affect the efficiency of the coupler. This paper presents the analysis of a circular coupler with ferrite bar cores and includes the analysis of the core loss considers the sizing of the device. The device is circular on a vertical axis and the air gap is large since there has to be a gap between the charger and vehicle. Therefore, the variation of the transformer coupler diameter is considered in terms of primary/secondary linkage for a fixed air gap. Resonance is used to improve the power factor and boost the transformer output voltage. The core loss is analyzed using finite element analysis in ANSYS Maxwell and the copper loss assumed the use of Litz wire.	en_US
dc.relation.ispartof	IEEE Transactions on Magnetics	en_US
dc.relation.isbasedon	10.1109/TMAG.2014.2334895	en_US
dc.subject.classification	Applied Physics	en_US
dc.title	Loss analysis of circular wireless EV charging coupler	en_US
dc.type	Journal Article
utslib.citation.volume	11	en_US
utslib.citation.volume	50	en_US
utslib.for	02 Physical Sciences	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	closed_access
pubs.issue	11	en_US
pubs.publication-status	Published	en_US
pubs.volume	50	en_US

Abstract:

© 2014 IEEE. With the demand for mass-produced commercial electric vehicles (EVs) growing over the last few years, the requirement for EV charging will increase, with continued growth as the number of on-road EVs increases. The EV wireless charging technology offers more flexibility than traditional plug-in charging technology for the following reasons: 1) full automation; 2) fast response; 3) high-power capacity; and 4) safety. The charging coupler is the key component in an inductive wireless charging system. This is a medium to high-frequency transformer (20 kHz), the core loss and the copper loss have to be considered carefully since these will affect the efficiency of the coupler. This paper presents the analysis of a circular coupler with ferrite bar cores and includes the analysis of the core loss considers the sizing of the device. The device is circular on a vertical axis and the air gap is large since there has to be a gap between the charger and vehicle. Therefore, the variation of the transformer coupler diameter is considered in terms of primary/secondary linkage for a fixed air gap. Resonance is used to improve the power factor and boost the transformer output voltage. The core loss is analyzed using finite element analysis in ANSYS Maxwell and the copper loss assumed the use of Litz wire.

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http://hdl.handle.net/10453/32735