CUED Publications database

Numerical analysis of non-uniformities and anisotropy in high-temperature superconducting coils

Hu, D and Ainslie, MD and Zou, J and Cardwell, DA (2015) Numerical analysis of non-uniformities and anisotropy in high-temperature superconducting coils. IEEE Transactions on Applied Superconductivity, 25. ISSN 1051-8223

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Abstract

© 2002-2011 IEEE. High-temperature superconducting (HTS) coils play an important role in a number of large-scale engineering applications, such as electric machines employing HTS coated conductors. Non-uniformities and anisotropy in the properties of the coated conductor along its length and width can have a large impact on the performance of the tape, which directly influences the performance of an HTS electric machine. In this paper, the specific influences of non-uniformity and anisotropy on the dc properties of coils, such as the maximum allowable dc current, and the ac properties, such as ac loss, are analyzed using a numerical model based on the H formulation. It is found that non-uniformity along the conductor width has a large effect on the ac properties (i.e., ac loss)of a coil, but a relatively small effect on the dc properties (i.e., critical current). Conversely, non-uniformity along the length has a small effect on the ac coil properties, but has a large effect on the dc properties.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div C > Materials Engineering
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:40
Last Modified: 19 Sep 2017 01:29
DOI: