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Novel Core Structure and Iron‐Loss Modeling for Contactless Power Transfer System of Electric Vehicle
Author(s) -
Chigira Masato,
Nagatsuka Yuichi,
Kaneko Yasuyoshi,
Abe Shigeru,
Yasuda Tomio,
Suzuki Akira
Publication year - 2013
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.22377
Subject(s) - transformer , maximum power transfer theorem , transfer efficiency , core (optical fiber) , magnetic core , air gap (plumbing) , electric vehicle , electrical engineering , electric power , materials science , power loss , power (physics) , mechanical engineering , engineering , automotive engineering , computer science , electronic engineering , physics , electromagnetic coil , voltage , composite material , quantum mechanics
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