Analysis of AC Transport Loss in Conductor on Round Core Cables
Publication Date
2022Journal Title
Journal of Superconductivity and Novel Magnetism
ISSN
1557-1939
Publisher
Springer Science and Business Media LLC
Volume
35
Issue
1
Pages
57-63
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Yang, J., Li, C., Tian, M., Liu, S., Shen, B., Hao, L., Ozturk, Y., & et al. (2022). Analysis of AC Transport Loss in Conductor on Round Core Cables. Journal of Superconductivity and Novel Magnetism, 35 (1), 57-63. https://doi.org/10.1007/s10948-021-06031-5
Abstract
<jats:title>Abstract</jats:title><jats:p>The conductor on round core (CORC) cable wound with second-generation high-temperature superconducting (HTS) tapes is a promising cable candidate with superiority in current capacity and mechanical strength. The composing superconductors and the former are tightly assembled, resulting in a strong electro-magnetic interaction between them. Correspondingly, the AC loss is influenced by the cable structure. In this paper, a 3D finite-element model of the CORC cable is first built, and it includes the complex geometry, the angular dependence of critical current and the periodic settings. The modelling is verified by the measurements conducted for the transport loss of a two-layer CORC cable. Subsequently, the simulated results show that the primary transport loss shifts from the former to the superconductors as the current increases. Meanwhile, the loss exhibited in the outer layer is larger than that of the inner layer, which is caused by the shielding effect among layers and the former. This also leads to the current inhomogeneity in CORC cables. In contrast with the two-layer case, the simulated single-layer structure indicates stronger frequency dependence because the eddy current loss in the copper former is always dominant without the cancellation of the opposite-wound layers. The core eddy current of the single structure is denser on the outer surface. Finally, the AC transport losses among a straight HTS tape, a two-layer cable and a single-layer cable are compared. The two-layer structure is confirmed to minimise the loss, meaning an even-numbered arrangement makes better use of the cable space and superconducting materials. Having illustrated the electro-magnetic behaviour inside the CORC cable, this work is an essential reference for the structure design of CORC cables.</jats:p>
Keywords
Original Paper, AC transport loss, CORC cable, Finite-element method, Layered structure, Shielding effect, Eddy current loss
Identifiers
s10948-021-06031-5, 6031
External DOI: https://doi.org/10.1007/s10948-021-06031-5
This record's URL: https://www.repository.cam.ac.uk/handle/1810/333200
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
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