NDLI: Ferrite core couplers for inductive chargers

Content Provider	IEEE Xplore Digital Library
Author	Nakao, F. Matsuo, Y. Kitaoka, M. Sakamoto, H.
Copyright Year	2002
Description	Author affiliation: FDK Corp., Shizuoka, Japan (Nakao, F.)
Abstract	Growing attention is being directed to inductive charging as a battery charging method for electric vehicles, due to its safe operation even under wet and stained conditions. For inductive charging, paddle and disc structures have been proposed. The paddle type can be a compact structure, but its rapid (large power) charging capacity is limited. Although the disc type can handle a large power, it is disadvantaged by its heavy weight and difficult position matching between the feeder and receiver discs. Since light weight and large power transmission are two essential prerequisites for automotive use, it will be the best to combine the advantages of the paddle and disc type inductive chargers. In this paper, we report our experiment on reducing the weight and facilitating the position matching of ferrite core discs for inductive chargers, using non-contact disc couplers. Our two important findings: First, the disc weight can be reduced to three-eighths by dividing each disc and removing some of the disc slices, while a sufficient amount of power transmission is maintained. Second, by pairing the upper and lower disc slices in partial overlap, a satisfactory coupling efficiency is achieved even if the horizontal lag between the two discs is widened 1.7 times.
Sponsorship	Ind. Appl. Soc. IEE Japan & IEEE Ind. Appl. Soc.
Starting Page	850
Ending Page	854
File Size	332286
Page Count	5
File Format	PDF
ISBN	0780371569
DOI	10.1109/PCC.2002.997631
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-04-02
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ferrites Couplers Magnetic flux Couplings Shape Coils Magnetic separation Automotive engineering Magnetic cores Magnetic analysis
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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