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Analysis and Design of Three-Coil Coupler for Inductive Power Transfer System With Automatic Seamless CC-to-CV Charging Capability
Xu, Hai1; Huang, Zhenwei1; Yang, Yang1; Huang, Zhicong1; Iam, Io Wa2,3; Lam, Chi Seng2,3
2022
Source PublicationIEEE Access
ISSN2169-3536
Volume10Pages:10139-10148
Abstract

The three-coil loosely coupled inductive power transfer (IPT) charging system can achieve constant current (CC) to constant voltage (CV) output automatically and smoothly during battery charging process. However, due to cross-coupling that existed between the assistive and receiver coils, a voltage deviation will generate in CV output compared with the ideal CV charging voltage threshold of battery. In this paper, the practical effect of the cross-coupling between the assistive and receiver coils and the impedance matching at full load for efficiency optimization are further taken into consideration based on three-coil coupler design. Four design schemes of the assistive coil are compared by finite-element analysis (FEA) and an effective design approach is provided. Then, the proposed approach is theoretically analyzed to relieve the cross-coupling issue on the CV output even with efficiency optimization. Also, it decreases the space occupancy of the three-coil coupler. Finally, an experimental prototype is built to verify the proposed design method and the theoretical analysis.

KeywordBatteries Coils Couplers Optimization Receivers Rectifiers Transmitters
DOI10.1109/ACCESS.2022.3145685
URLView the original
Indexed BySCIE ; EI
Language英語English
Scopus ID2-s2.0-85123691849
Fulltext Access
Citation statistics
Document TypeJournal article
CollectionINSTITUTE OF MICROELECTRONICS
Corresponding AuthorLam, Chi Seng
Affiliation1.Shien-Ming Wu School of Intelligent Engineering, South China University of Technology, Guangzhou, 511442, China
2.State Key Laboratory of Analog and Mixed-Signal VLSI & Institute of Microelectronics, University of Macau, Macao 999078, China
3.Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macao 999078, China
Corresponding Author AffilicationUniversity of Macau;  Faculty of Science and Technology
Recommended Citation
GB/T 7714
Xu, Hai,Huang, Zhenwei,Yang, Yang,et al. Analysis and Design of Three-Coil Coupler for Inductive Power Transfer System With Automatic Seamless CC-to-CV Charging Capability[J]. IEEE Access,2022,10:10139-10148.
APA Xu, Hai,Huang, Zhenwei,Yang, Yang,Huang, Zhicong,Iam, Io Wa,&Lam, Chi Seng.(2022).Analysis and Design of Three-Coil Coupler for Inductive Power Transfer System With Automatic Seamless CC-to-CV Charging Capability.IEEE Access,10,10139-10148.
MLA Xu, Hai,et al."Analysis and Design of Three-Coil Coupler for Inductive Power Transfer System With Automatic Seamless CC-to-CV Charging Capability".IEEE Access 10(2022):10139-10148.
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