High current DyBCO-ROEBEL Assembled Coated Conductor (RACC)
By W. Goldacker, R. Nast, G. Kotzyba, S. Schlachter, A. Frank, B. Ringsdorf, C. Schmidt, P. Komarek. 2005
138 citations recorded by the source corpus.
Low AC loss high transport current HTS cables (>1 kA) are required for application in transformers, generators and are considered for future generations of fusion reactors coils. 2G coated conductors are suitable candidates for high field application at quite high operation temperatures of 50-77 K, which is crucial precondition for economical cooling costs. As a feasibility study we present the first ROEBEL bar cable of approx. 35 cm length made from industrial DyBCO coated conductor (THEVA GmbH, Germany). Meander shaped ROEBEL strands of 4 mm width with a twist pitch of 180 mm were cut from 10 mm wide CC tapes using a specially designed tool. The strands carried in average 157 Amps/cm-width DC and were assembled to a subcable with 5 strands and a final cable with 16 strands. The 5 strand cable was tested and carried a transport current of >300 Amps DC at 77 K, equivalent to the sum of the individual strand transport critical currents. The 16 strand cable carried 500 A limited through heating effects and non sufficient stabilisation and current sharing. A pulse current load indicated a current carrying potential of >1 kA for the 16 strand cable.
Subfields: Biomedical Engineering, Condensed Matter Physics
View Paper: https://www.semanticscholar.org/paper/4781dc355dbb93b39f687d3ee0d4ef2a4e9e6ada
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In Biomedical Engineering
In Condensed Matter Physics
Citations in the corpus
- A review of commercial high temperature superconducting materials for large magnets: from wires and tapes to cables and conductors (2019, methodology): “The Roebel concept was adapted to coated conductors around 2006 at the Karlsruhe Institute of Technology (KIT) [84].”
- ROEBEL Assembled Coated Conductors (RACC): Preparation, Properties and Progress (2007, methodology): “like ROEBEL strand structure from single CC tapes, followed by the assembling process to the RACC-cable structure (RACC=ROEBEL Assembled CC) was introduced recently [6].”