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Electro-thermal modeling of quench in REBCO roebel cables

Electro-thermal modeling of quench in REBCO roebel cables
Electro-thermal modeling of quench in REBCO roebel cables

The possibility of REBCO Roebel Cables to carry a large amount of current in high external magnetic fields makes them suitable for application in future particle accelerator magnets. The physical phenomena related to the initiation and propagation of a quench event in Roebel cables have not yet been fully analysed and understood. In particular, given the peculiar architecture of these conductors, the features of the current redistribution and normal zone propagation after quench in individual tapes still require experimental and theoretical investigation. In this paper, an innovative quasi-3D electro-thermal FEM model is developed to analyse the effect of quench in HTS Roebel cables. The model is based on a reduced dimensionality approach, under the assumption of a negligible thickness of the individual REBCO tapes. While the tapes are meshed in an identical 1D pattern, the non-continuous electrical and thermal contacts among them are accounted for as a sources in the corresponding thermal and electrical equations. Notwithstanding these significant assumptions, the main physical aspects involved in the quench initiation and propagation are retained and correctly described by the reduced dimensionality approach. The Quench Energy and the Normal Zone Propagation Velocity are analysed for different cable configurations.

HTS, Modelling, Quench, Roebel
1051-8223
1-5
Cavallucci, Lorenzo
c7db63fe-4607-4dbc-a2c1-71778993caba
Breschi, Marco
b605754a-fe6d-4aa3-9b96-7113a7b0a4c4
Ribani, Pier Luigi
e0538146-7705-4ab8-b246-7a99a5806258
Yang, Yifeng
4cac858a-e0c0-4174-a839-05ca394fc51f
Cavallucci, Lorenzo
c7db63fe-4607-4dbc-a2c1-71778993caba
Breschi, Marco
b605754a-fe6d-4aa3-9b96-7113a7b0a4c4
Ribani, Pier Luigi
e0538146-7705-4ab8-b246-7a99a5806258
Yang, Yifeng
4cac858a-e0c0-4174-a839-05ca394fc51f

Cavallucci, Lorenzo, Breschi, Marco, Ribani, Pier Luigi and Yang, Yifeng (2018) Electro-thermal modeling of quench in REBCO roebel cables. IEEE Transactions on Applied Superconductivity, 28 (4), 1-5. (doi:10.1109/TASC.2018.2826073).

Record type: Article

Abstract

The possibility of REBCO Roebel Cables to carry a large amount of current in high external magnetic fields makes them suitable for application in future particle accelerator magnets. The physical phenomena related to the initiation and propagation of a quench event in Roebel cables have not yet been fully analysed and understood. In particular, given the peculiar architecture of these conductors, the features of the current redistribution and normal zone propagation after quench in individual tapes still require experimental and theoretical investigation. In this paper, an innovative quasi-3D electro-thermal FEM model is developed to analyse the effect of quench in HTS Roebel cables. The model is based on a reduced dimensionality approach, under the assumption of a negligible thickness of the individual REBCO tapes. While the tapes are meshed in an identical 1D pattern, the non-continuous electrical and thermal contacts among them are accounted for as a sources in the corresponding thermal and electrical equations. Notwithstanding these significant assumptions, the main physical aspects involved in the quench initiation and propagation are retained and correctly described by the reduced dimensionality approach. The Quench Energy and the Normal Zone Propagation Velocity are analysed for different cable configurations.

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More information

Accepted/In Press date: 11 April 2018
e-pub ahead of print date: 12 April 2018
Published date: June 2018
Keywords: HTS, Modelling, Quench, Roebel

Identifiers

Local EPrints ID: 422497
URI: http://eprints.soton.ac.uk/id/eprint/422497
ISSN: 1051-8223
PURE UUID: 612a3f5e-21aa-47ca-a965-c8bd07e1a7a8
ORCID for Yifeng Yang: ORCID iD orcid.org/0000-0002-3874-6735

Catalogue record

Date deposited: 24 Jul 2018 16:31
Last modified: 07 Oct 2020 01:37

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