Performance improvement of YBCO coil for high-field HTS-SMES based on homogenized distribution of magnetically-mechanically influenced critical current

Kohei Higashikawa, Taketsune Nakamura, Michinaka Sugano, Koji Shikimachi, Naoki Hirano, Shigeo Nagaya

研究成果: ジャーナルへの寄稿記事

20 引用 (Scopus)

抄録

Generally speaking for a HTS coil, perpendicular magnetic field to conductor's broad surface should be suppressed as small as possible in relation to the magnetic anisotropy. This is a reason why toroidal coil with relatively many elementary coils is expected for HTS-SMES. On the other hand, from the point of view of the homogenization of critical current distribution in the coil, perpendicular field and parallel field should be balanced corresponding to the ratio of the magnetic anisotropy. This means that a certain level of the perpendicular field is effective to reduce local heat generation in the coil. Furthermore, this concept is especially reasonable for a high-field coil with usual winding method (flat-wise winding) because the perpendicular field does not induce hoop stress which decreases the critical current. In this paper, we show these findings through an optimal design of a MOCVD-YBCO toroidal coil for 2 GJ class SMES taking account of magnetically and mechanically influenced J - E characteristics.

元の言語英語
記事番号4493373
ページ(範囲)758-761
ページ数4
ジャーナルIEEE Transactions on Applied Superconductivity
18
発行部数2
DOI
出版物ステータス出版済み - 6 1 2008
外部発表Yes

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Magnetic anisotropy
Critical currents
critical current
coils
Heat generation
Metallorganic chemical vapor deposition
field coils
Magnetic fields
hoops
anisotropy
heat generation
current distribution
homogenizing
metalorganic chemical vapor deposition
conductors
magnetic fields
Optimal design

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

これを引用

Performance improvement of YBCO coil for high-field HTS-SMES based on homogenized distribution of magnetically-mechanically influenced critical current. / Higashikawa, Kohei; Nakamura, Taketsune; Sugano, Michinaka; Shikimachi, Koji; Hirano, Naoki; Nagaya, Shigeo.

:: IEEE Transactions on Applied Superconductivity, 巻 18, 番号 2, 4493373, 01.06.2008, p. 758-761.

研究成果: ジャーナルへの寄稿記事

Higashikawa, Kohei ; Nakamura, Taketsune ; Sugano, Michinaka ; Shikimachi, Koji ; Hirano, Naoki ; Nagaya, Shigeo. / Performance improvement of YBCO coil for high-field HTS-SMES based on homogenized distribution of magnetically-mechanically influenced critical current. :: IEEE Transactions on Applied Superconductivity. 2008 ; 巻 18, 番号 2. pp. 758-761.
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