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HTS CroCo - A Strand for High Direct Current Applications

Wolf, M. J.; Fietz, W. H.; Heiduk, M.; Heller, R.; Lange, C.; Preuß, A.; Weiss, K.-P.

Abstract:
High temperature superconductors (HTS) are discussed as energy-efficient solutions for applications needing high direct currents beyond 10 kA e.g. for large high-field magnets or bus bar systems in industrial electrolysis plants. A number of high-current cable concepts based on REBCO tapes were developed such as the Roebel cable, co-axially wound tapes and several stacked-tape arrangements, among them the HTS CrossConductor (HTS CroCo), a stacked-tape conductor with high current density developed at KIT. In this manuscript, the experimental test of a high DC demonstrator, termed Supra-DC-Cable, made from twelve HTS CroCo strands is presented. The demonstrator was tested successfully at T = 77 K, reaching the expected critical current of 33 kA at 77 K and even for a constant-current operation at 36 kA for more than 30 minutes limited by the copper connections, not the superconducting cable. Currents and voltages were measured in all twelve strands individually during the parallel operation in the cable. These measured data allow the experimental validation of the modelled current distribution, based on the individual characterization of the twelve strands.

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Verlagsausgabe §
DOI: 10.5445/IR/1000124083
Veröffentlicht am 12.10.2020
Originalveröffentlichung
DOI: 10.1088/1742-6596/1590/1/012020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technische Physik (ITEP)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1742-6588
KITopen-ID: 1000124083
Erschienen in 32nd International Symposium on Superconductivity, ISS 2019; Kyoto International Exhibition HallKyoto; Japan; 3 December 2019 through 5 December 2019
Verlag IOP Publishing Ltd, Bristol
Seiten Art. Nr.: 012020
Serie Journal of Physics: Conference Series ; 1590
Nachgewiesen in Scopus
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