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Magnet coupling and self-field AC losses of two neighbouring Ag sheathed PbBi2223 tapes

Magnet coupling and self-field AC losses of two neighbouring Ag sheathed PbBi2223 tapes
Magnet coupling and self-field AC losses of two neighbouring Ag sheathed PbBi2223 tapes
The magnetic interaction between two neighbouring superconducting tapes has significant influences on their self-field AC losses. While the two tapes are independent of each other when separated far apart, they are expected to be fully coupled and behave as a single tape when placed very near. One of the consequences of such coupling is the increase in the self-field loss per tape, which is double of that for an uncoupled tape carrying the same current. In order to assess the interactions among tapes in systems such as a power cable, a better understanding is necessary on the critical distance where the coupling becomes important. Experimental measurements on the self-field losses in two neighbouring Ag sheathed PbBi2223 tapes were carried out with the two tapes separated by various distances, while placed either side by side (side-configuration) or one on top of the other (top-configuration). The results indicates that the critical coupling distance for the top-configuration is about 5 mm, where the increase in loss per tape is about 10%. The critical length for the side-configuration is found to be of the same order of magnitude.
transport ac loss, Bi-2223 tape, coupling, tape assemblage
0921-4534
187-191
Hughes, T.J.
831a1967-aad9-4bc9-bced-1048718ef372
Yang, Y.
0c661323-7e23-41c6-a9a2-b4479fd74ef1
Beduz, C.
15245681-77b5-4b29-a8fc-23296f13bc57
Power, A.
4b4103a0-e489-44a1-bf28-d8e997a1eb4b
Hughes, T.J.
831a1967-aad9-4bc9-bced-1048718ef372
Yang, Y.
0c661323-7e23-41c6-a9a2-b4479fd74ef1
Beduz, C.
15245681-77b5-4b29-a8fc-23296f13bc57
Power, A.
4b4103a0-e489-44a1-bf28-d8e997a1eb4b

Hughes, T.J., Yang, Y., Beduz, C. and Power, A. (1998) Magnet coupling and self-field AC losses of two neighbouring Ag sheathed PbBi2223 tapes. Physica C: Superconductivity And its Applications, 310 (1-4), 187-191. (doi:10.1016/S0921-4534(98)00459-6).

Record type: Article

Abstract

The magnetic interaction between two neighbouring superconducting tapes has significant influences on their self-field AC losses. While the two tapes are independent of each other when separated far apart, they are expected to be fully coupled and behave as a single tape when placed very near. One of the consequences of such coupling is the increase in the self-field loss per tape, which is double of that for an uncoupled tape carrying the same current. In order to assess the interactions among tapes in systems such as a power cable, a better understanding is necessary on the critical distance where the coupling becomes important. Experimental measurements on the self-field losses in two neighbouring Ag sheathed PbBi2223 tapes were carried out with the two tapes separated by various distances, while placed either side by side (side-configuration) or one on top of the other (top-configuration). The results indicates that the critical coupling distance for the top-configuration is about 5 mm, where the increase in loss per tape is about 10%. The critical length for the side-configuration is found to be of the same order of magnitude.

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More information

Published date: 1998
Keywords: transport ac loss, Bi-2223 tape, coupling, tape assemblage

Identifiers

Local EPrints ID: 21285
URI: https://eprints.soton.ac.uk/id/eprint/21285
ISSN: 0921-4534
PURE UUID: e212554e-c161-4124-a3b4-5eaa45eb0e02

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Date deposited: 17 Nov 2006
Last modified: 17 Jul 2017 16:26

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Contributors

Author: T.J. Hughes
Author: Y. Yang
Author: C. Beduz
Author: A. Power

University divisions

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