The University of Southampton
University of Southampton Institutional Repository

The influence of geometry on self-field AC losses of Ag sheathed PbBi2223 tapes

The influence of geometry on self-field AC losses of Ag sheathed PbBi2223 tapes
The influence of geometry on self-field AC losses of Ag sheathed PbBi2223 tapes
We measured axial fields along an Ag sheltered PbBi2223 superconducting tape 3 mm wide and 0.03 mm thick carrying 47 Hz alternating currents. The critical current of the tape at 77 K was 15 A corresponding to a critical current density of 16000 A/cm2. The axial electric field was measured by pairs of voltage leads brought out in a plane perpendicular to the tape axis, turned axially to meet and so led out to a voltmeter. The spatial variation and the current dependence of the electric field, obtained from several pairs of taps closed at different radial positions, were consistent with the prediction for a uniform superconducting thin rectangle with a critical current Ic rather than a superconductor of elliptical cross-section. Our results also showed that the hysteretic losses at currents below Ic can be measured with an accuracy of about 5% using a pair of taps closed at a radial distance about three times the tape half-width.
0921-4534
378-386
Yang, Y.
0c661323-7e23-41c6-a9a2-b4479fd74ef1
Hughes, T.
e7ab9d6a-57d7-45d3-9a1b-bc00df50432e
Beduz, C.
15245681-77b5-4b29-a8fc-23296f13bc57
Spiller, D.M.
67e058fd-5428-4918-9cec-43a45a449516
Scurlock, R.G.
1e6e927d-a650-4c64-af64-3a8546a4cd07
Norris, W.T.
44cf1b46-6f4b-4edd-8b07-228cb57f0fa1
Yang, Y.
0c661323-7e23-41c6-a9a2-b4479fd74ef1
Hughes, T.
e7ab9d6a-57d7-45d3-9a1b-bc00df50432e
Beduz, C.
15245681-77b5-4b29-a8fc-23296f13bc57
Spiller, D.M.
67e058fd-5428-4918-9cec-43a45a449516
Scurlock, R.G.
1e6e927d-a650-4c64-af64-3a8546a4cd07
Norris, W.T.
44cf1b46-6f4b-4edd-8b07-228cb57f0fa1

Yang, Y., Hughes, T., Beduz, C., Spiller, D.M., Scurlock, R.G. and Norris, W.T. (1996) The influence of geometry on self-field AC losses of Ag sheathed PbBi2223 tapes. Physica C: Superconductivity and its Applications, 256 (3-4), 378-386. (doi:10.1016/0921-4534(95)00662-1).

Record type: Article

Abstract

We measured axial fields along an Ag sheltered PbBi2223 superconducting tape 3 mm wide and 0.03 mm thick carrying 47 Hz alternating currents. The critical current of the tape at 77 K was 15 A corresponding to a critical current density of 16000 A/cm2. The axial electric field was measured by pairs of voltage leads brought out in a plane perpendicular to the tape axis, turned axially to meet and so led out to a voltmeter. The spatial variation and the current dependence of the electric field, obtained from several pairs of taps closed at different radial positions, were consistent with the prediction for a uniform superconducting thin rectangle with a critical current Ic rather than a superconductor of elliptical cross-section. Our results also showed that the hysteretic losses at currents below Ic can be measured with an accuracy of about 5% using a pair of taps closed at a radial distance about three times the tape half-width.

This record has no associated files available for download.

More information

Published date: 1996

Identifiers

Local EPrints ID: 21073
URI: http://eprints.soton.ac.uk/id/eprint/21073
ISSN: 0921-4534
PURE UUID: 9b64a398-ff42-4d19-8c7f-58cb8e875c21

Catalogue record

Date deposited: 31 Oct 2006
Last modified: 15 Mar 2024 06:27

Export record

Altmetrics

Contributors

Author: Y. Yang
Author: T. Hughes
Author: C. Beduz
Author: D.M. Spiller
Author: R.G. Scurlock
Author: W.T. Norris

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×