### 抄録

AC losses are numerically estimated in straight superconductors with an elliptic cross section exposed to a transverse magnetic field. It is assumed that the distribution of magnetic field in the superconductors is determined by Bean's critical state model, in which the critical current density is independent of the magnitude of local magnetic field. The penetration process of magnetic flux into the superconductors approximated as a group of fine rectangular bars is evaluated by means of the minimization of magnetic energy for the application of the external magnetic fields with arbitrary angles to their broadest face. By using the obtained penetration process, the AC losses are also calculated from the distribution of magnetic vector potential inside the superconductors. Furthermore, the compensation for the numerical results of AC losses enables us to obtain a universal loss property that is scarcely affected by the aspect ratio of cross section and the angle of external field.

元の言語 | 英語 |
---|---|

ページ（範囲） | 1570-1573 |

ページ数 | 4 |

ジャーナル | IEEE Transactions on Applied Superconductivity |

巻 | 15 |

発行部数 | 2 PART II |

DOI | |

出版物ステータス | 出版済み - 6 1 2005 |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Electrical and Electronic Engineering
- Physics and Astronomy (miscellaneous)

### これを引用

*IEEE Transactions on Applied Superconductivity*,

*15*(2 PART II), 1570-1573. https://doi.org/10.1109/TASC.2005.849174

**Numerical evaluation of anisotropy of magnetization losses in superconducting wires with elliptic cross section.** / Kajikawa, Kazuhiro; Hayashi, Toshihiro; Funaki, Kazuo.

研究成果: ジャーナルへの寄稿 › 記事

*IEEE Transactions on Applied Superconductivity*, 巻. 15, 番号 2 PART II, pp. 1570-1573. https://doi.org/10.1109/TASC.2005.849174

}

TY - JOUR

T1 - Numerical evaluation of anisotropy of magnetization losses in superconducting wires with elliptic cross section

AU - Kajikawa, Kazuhiro

AU - Hayashi, Toshihiro

AU - Funaki, Kazuo

PY - 2005/6/1

Y1 - 2005/6/1

N2 - AC losses are numerically estimated in straight superconductors with an elliptic cross section exposed to a transverse magnetic field. It is assumed that the distribution of magnetic field in the superconductors is determined by Bean's critical state model, in which the critical current density is independent of the magnitude of local magnetic field. The penetration process of magnetic flux into the superconductors approximated as a group of fine rectangular bars is evaluated by means of the minimization of magnetic energy for the application of the external magnetic fields with arbitrary angles to their broadest face. By using the obtained penetration process, the AC losses are also calculated from the distribution of magnetic vector potential inside the superconductors. Furthermore, the compensation for the numerical results of AC losses enables us to obtain a universal loss property that is scarcely affected by the aspect ratio of cross section and the angle of external field.

AB - AC losses are numerically estimated in straight superconductors with an elliptic cross section exposed to a transverse magnetic field. It is assumed that the distribution of magnetic field in the superconductors is determined by Bean's critical state model, in which the critical current density is independent of the magnitude of local magnetic field. The penetration process of magnetic flux into the superconductors approximated as a group of fine rectangular bars is evaluated by means of the minimization of magnetic energy for the application of the external magnetic fields with arbitrary angles to their broadest face. By using the obtained penetration process, the AC losses are also calculated from the distribution of magnetic vector potential inside the superconductors. Furthermore, the compensation for the numerical results of AC losses enables us to obtain a universal loss property that is scarcely affected by the aspect ratio of cross section and the angle of external field.

UR - http://www.scopus.com/inward/record.url?scp=22144457046&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=22144457046&partnerID=8YFLogxK

U2 - 10.1109/TASC.2005.849174

DO - 10.1109/TASC.2005.849174

M3 - Article

AN - SCOPUS:22144457046

VL - 15

SP - 1570

EP - 1573

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

IS - 2 PART II

ER -