AC loss properties of laser-scribed multi-filamentary GdBCO coated conductors with artificial pinning centres

Takuya Hayashia, Sosuke Nakamura, Masataka Iwakuma, Kazuo Funaki, Akira Ibi, Yutaka Yamada, Teruo Izumi, Yuh Shiohara, Takashi Saitoh, Yasuhiro Iijima

研究成果: ジャーナルへの寄稿Conference article

1 引用 (Scopus)

抄録

RE 1 Ba 2 Cu 3 O 7 -∂ (RE: Rare Earth, Gd, Y and so on) coated conductors have a large aspect ratio and also anisotropy in critical current density. For practical application of REBCO tapes, we evaluated J C and ac loss properties in a wide range of temperature and magnetic field. The induced ac losses due to the perpendicular magnetic field to a tape face are considerably huge. Therefore, in case that REBCO coated conductors are applied electric power machines and devices, ac loss induced in the windings should amount to a great part of the total heat load. We proposed an ac loss reduction method, which is combined with a laser scribing technique and a special winding process into a multifilamentary structure. Additionally, we are trying to enhance critical current density J C , by doping artificial pinning centre. In this study we investigated the ac loss properties of multi-filament structural GdBCO tapes with BZO nanolods as artificial pinning centers. We measured ac losses of 5, 10, 20-filament GdBCO tapes by using a saddle-shaped pickup coil. Consequently we confirmed the ac loss decreased in inverse proportion to the number of filaments even in the GdBCO tapes with enhanced J C by introducing artificial pinning centers.

元の言語英語
ページ(範囲)1522-1527
ページ数6
ジャーナルPhysics Procedia
36
DOI
出版物ステータス出版済み - 1 1 2012
イベントSuperconductivity Centennial Conference, SCC 2011 - The Hague, オランダ
継続期間: 9 18 20119 23 2011

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alternating current
conductors
tapes
lasers
filaments
critical current
current density
scoring
saddles
electric power
magnetic fields
aspect ratio
proportion
temperature distribution
coils
rare earth elements
heat
anisotropy
sensors

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

これを引用

AC loss properties of laser-scribed multi-filamentary GdBCO coated conductors with artificial pinning centres. / Hayashia, Takuya; Nakamura, Sosuke; Iwakuma, Masataka; Funaki, Kazuo; Ibi, Akira; Yamada, Yutaka; Izumi, Teruo; Shiohara, Yuh; Saitoh, Takashi; Iijima, Yasuhiro.

:: Physics Procedia, 巻 36, 01.01.2012, p. 1522-1527.

研究成果: ジャーナルへの寄稿Conference article

Hayashia, T, Nakamura, S, Iwakuma, M, Funaki, K, Ibi, A, Yamada, Y, Izumi, T, Shiohara, Y, Saitoh, T & Iijima, Y 2012, 'AC loss properties of laser-scribed multi-filamentary GdBCO coated conductors with artificial pinning centres', Physics Procedia, 巻. 36, pp. 1522-1527. https://doi.org/10.1016/j.phpro.2012.06.204
Hayashia, Takuya ; Nakamura, Sosuke ; Iwakuma, Masataka ; Funaki, Kazuo ; Ibi, Akira ; Yamada, Yutaka ; Izumi, Teruo ; Shiohara, Yuh ; Saitoh, Takashi ; Iijima, Yasuhiro. / AC loss properties of laser-scribed multi-filamentary GdBCO coated conductors with artificial pinning centres. :: Physics Procedia. 2012 ; 巻 36. pp. 1522-1527.
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