Novel Core Structure and Iron-Loss Modeling for Contactless Power Transfer System of Electric Vehicle

A contactless power transfer system for electric vehicles must have high efficiency, a large air gap, good tolerance to misalignment in the lateral direction, compactness, and light weight. In this paper, a new 1.5‐kW transformer has been developed using a novel H‐shaped core which is more efficient...

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Published in:Electrical engineering in Japan 2013-07, Vol.184 (2), p.61-70
Main Authors: Chigira, Masato, Nagatsuka, Yuichi, Kaneko, Yasuyoshi, Abe, Shigeru, Yasuda, Tomio, Suzuki, Akira
Format: Article
Language:English
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Computational efficiency
contactless power transfer system
core
efficiency
electric vehicle
iron loss
temperature rise test
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creator Chigira, Masato
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Suzuki, Akira
description A contactless power transfer system for electric vehicles must have high efficiency, a large air gap, good tolerance to misalignment in the lateral direction, compactness, and light weight. In this paper, a new 1.5‐kW transformer has been developed using a novel H‐shaped core which is more efficient, more robust to misalignment, and lighter than previous rectangular cores, to satisfy these criteria, and its characteristics are described. An efficiency of 95% was achieved across a 70‐mm mechanical gap. Iron‐loss modeling of the equivalent circuit is also presented. The calculated efficiency using this model shows good agreement with experimental results. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 184(2): 61–70, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22377
doi_str_mv 10.1002/eej.22377
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subjects Computational efficiency
contactless power transfer system
core
efficiency
electric vehicle
iron loss
temperature rise test
title Novel Core Structure and Iron-Loss Modeling for Contactless Power Transfer System of Electric Vehicle
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