2010年11月
AC loss characteristics of superconducting power transmission cables: gap effect and J(c) distribution effect
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
- ,
- ,
- ,
- ,
- 巻
- 23
- 号
- 11
- 開始ページ
- 115003
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1088/0953-2048/23/11/115003
- 出版者・発行元
- IOP PUBLISHING LTD
Four groups of superconducting power transmission cables composed of coated conductors with 4.0 mm width and 2 mu m superconductor thickness have been designed, including mono-layer, two-layer, four-layer and six-layer cables. In each group, three types of cables have been constructed with gaps of different size between adjacent coated conductors, which are classified into small gap, medium gap and large gap. Moreover, different lateral critical current density (J(c)) distributions, specifically a uniform distribution and a trapezoidal distribution with a sloping shoulder, have been assumed while calculating the AC losses of these cables numerically by using a one-dimensional FEM model. Numerical results show that AC losses in mono-layer cables are significantly influenced by gaps between coated conductors as well as lateral J(c) distribution, while cables with many layers are hardly affected by them. This proves that small gaps between coated conductors are not absolutely essential to reduce AC losses in multi-layer cables, and a sloping shoulder of the J(c) distribution is more allowable in multi-layer cables than in mono-layer cables. The AC loss distributions among layers in six-layer cables are presented and the reasons for different influences of the gap as well as the lateral J(c) distribution in mono-layer and multi-layer cables are discussed.
- リンク情報
- ID情報
-
- DOI : 10.1088/0953-2048/23/11/115003
- ISSN : 0953-2048
- Web of Science ID : WOS:000284308000003