NDLI: Design of LF-WPT systems of sympathetic connection employing non-resonant grounded antennas and external circuits which emulate the systems employing self-resonant electrically small antennas

Content Provider	IEEE Xplore Digital Library
Author	Inagaki, N. Tabata, T. Hori, S.
Copyright Year	2012
Description	Author affiliation: Kojima Press Industry Co., Ltd. Research & Development DIV, 15 Hirokuden, Ukigai-cho, Miyoshi-shi, 470-0207 Japan (Tabata, T.; Hori, S.) \|\| Nagoya Institute of Technology (Inagaki, N.)
Abstract	A design method of WPT systems for use in EV wireless charging is developed. The proposed loops and the external circuit configurations are in the form of equivalent circuit for WPT systems with self-resonant antennas, and the explicit design formulae for the external capacitors and inductors are given in terms of the magnetic coupling coefficient k between two coils, working frequency f0 and the port impedances R0. Aggressive targets are set, such as smaller loops, longer spacing between loops, lighter systems weight, and so on. k and the Q's of the coils and the external circuit are the key parameters determining the obtainable power transfer efficiency. Higher magnetic coupling coefficient is possible by employing thicker conducting pipes for making coils. A design example for a system in 150kHz band with rectangular loops with side-length less than 40cm, loops separation 19cm, transmitor or receiver weight less than 5 kg including ground plates, is tested by simulation and experiment. The usefulness of the design theory has been verified, and the directions towards the future efforts are described.
Starting Page	101
Ending Page	104
File Size	900573
Page Count	4
File Format	PDF
ISBN	9781467317771
e-ISBN	9781467317801
DOI	10.1109/IMWS.2012.6215769
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-05-10
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	external circuit configuration EV wireless charging sympathetic connection power transfer efficiency WPT
Content Type	Text
Resource Type	Article

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