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Design of High-Efficiency Inductive Charging System with Load-Independent Output Voltage and Current Tolerant of Varying Coupling Condition
Wong, Chi Shing1; Wong, Man Chung2; Cao, Lingling3; Loo, K. H.3
2021-12-01
Source PublicationIEEE Transactions on Power Electronics
ISSN0885-8993
Volume36Issue:12Pages:13546-13561
Abstract

Maintaining constant-current (CC) and constant-voltage (CV) outputs for meeting the charging profile of lithium-ion batteries while realizing zero-voltage-switching on the primary bridge over wide ranges of load and coupling variations are rather challenging due to the presence of leakage and magnetizing inductances of a loosely coupled transformer. Although the challenges can be greatly relaxed by properly designing a compensation network with load-independent output characteristics, the desirable characteristics rendered by fixed compensation networks will be lost and cannot be fully restored by existing control methods once the designed compensation is deviated from the nominal coupling condition. In this article, a dynamic series/series-parallel compensation network, which originally aims to deliver constant output voltage only, is further investigated as a feasible topology for CC-CV battery charger adaptive to different sizes of air gap/misalignment of the coils. As benefited from the extra controllability offered by the parallel compensation capacitance as compared to the series/series compensation counterpart, this article provides alternative design criterion for the effective parallel compensation capacitance for designing and maintaining desirable charging currents in the CC stage while maximizing the efficiency in the CV stage under varying coupling condition. An experimental prototype with the air gap ranging from 10 to 16 cm is built to verify the idea.

KeywordBattery Charger Dynamic Series/series-parallel (S/sp) Compensation Inductive Power Transfer (Ipt) Switch-controlled Capacitor (Scc) Varying Coupling Condition
DOI10.1109/TPEL.2021.3086858
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000686884300024
Scopus ID2-s2.0-85111026078
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Cited Times [WOS]:3   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorWong, Chi Shing
Affiliation1.Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong, Hong Kong
2.Electrical and Computer Engineering, Faculty of Science and Technology, State Key Laboratory of Internet of Things for Smart City, University of Macau, Macao
3.School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, China
Recommended Citation
GB/T 7714
Wong, Chi Shing,Wong, Man Chung,Cao, Lingling,et al. Design of High-Efficiency Inductive Charging System with Load-Independent Output Voltage and Current Tolerant of Varying Coupling Condition[J]. IEEE Transactions on Power Electronics,2021,36(12):13546-13561.
APA Wong, Chi Shing,Wong, Man Chung,Cao, Lingling,&Loo, K. H..(2021).Design of High-Efficiency Inductive Charging System with Load-Independent Output Voltage and Current Tolerant of Varying Coupling Condition.IEEE Transactions on Power Electronics,36(12),13546-13561.
MLA Wong, Chi Shing,et al."Design of High-Efficiency Inductive Charging System with Load-Independent Output Voltage and Current Tolerant of Varying Coupling Condition".IEEE Transactions on Power Electronics 36.12(2021):13546-13561.
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