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Title: Large air-gap coupler for inductive charger

Abstract

A novel magnetic coupler with large air gap is presented. It is developed for the electric vehicle's automatic inductive charger. The new inductive coupler proposed here has sufficient exciting inductance even if it has a large air gap. Calculated exciting inductance is 40 {micro}H at 2 turns of winding and 5 mm air gap, which agrees well with measured value. In order to assess the generation of heat caused by the eddy current, the magnetic flux densities in the inductive charger and also a flat iron plate, to which the inductive charger is attached, are calculated. The conversion efficiency with the coupler and a MOSFETs full-bridge inverter of 100 kHz, is 97% at 8.3 kW output.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Kumamoto Inst. of Tech. (JP)
OSTI Identifier:
20000795
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)
Additional Journal Information:
Journal Volume: 35; Journal Issue: 5Pt2; Conference: 1999 international magnetics conference (Intermag '99), Kyongju (KR), 05/18/1999--05/21/1999; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; 25 ENERGY STORAGE; ELECTRIC-POWERED VEHICLES; ELECTRIC BATTERIES; INDUCTION; BATTERY CHARGERS; INVERTERS; DESIGN

Citation Formats

Sakamoto, H., Harada, K., Washimiya, S., Takehara, K., Matsuo, Y., and Nakao, F. Large air-gap coupler for inductive charger. United States: N. p., 1999. Web. doi:10.1109/20.800578.
Sakamoto, H., Harada, K., Washimiya, S., Takehara, K., Matsuo, Y., & Nakao, F. Large air-gap coupler for inductive charger. United States. doi:10.1109/20.800578.
Sakamoto, H., Harada, K., Washimiya, S., Takehara, K., Matsuo, Y., and Nakao, F. Wed . "Large air-gap coupler for inductive charger". United States. doi:10.1109/20.800578.
@article{osti_20000795,
title = {Large air-gap coupler for inductive charger},
author = {Sakamoto, H. and Harada, K. and Washimiya, S. and Takehara, K. and Matsuo, Y. and Nakao, F.},
abstractNote = {A novel magnetic coupler with large air gap is presented. It is developed for the electric vehicle's automatic inductive charger. The new inductive coupler proposed here has sufficient exciting inductance even if it has a large air gap. Calculated exciting inductance is 40 {micro}H at 2 turns of winding and 5 mm air gap, which agrees well with measured value. In order to assess the generation of heat caused by the eddy current, the magnetic flux densities in the inductive charger and also a flat iron plate, to which the inductive charger is attached, are calculated. The conversion efficiency with the coupler and a MOSFETs full-bridge inverter of 100 kHz, is 97% at 8.3 kW output.},
doi = {10.1109/20.800578},
journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},
issn = {0018-9464},
number = 5Pt2,
volume = 35,
place = {United States},
year = {1999},
month = {9}
}