2G HTS Coil Technology Development at SuperPower

• Published in: IEEE transactions on applied superconductivity Vol. 23; no. 3; p. 4600806
• Main Authors: Honghai Song, Brownsey, P., Yifei Zhang, Waterman, J., Fukushima, T., Hazelton, D.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.06.2013; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: 2G HTS; Applied sciences; C-axis peel strength; coil winding; Coils; Coils (windings); Communities; Conductors; Construction; Electric connection. Cables. Wiring; Electric wire; Electrical engineering. Electrical power engineering; Electrical power engineering; Electromagnets; Exact sciences and technology; High temperature superconductors; Integrated circuits; MECHANICAL PROPERTIES; Miscellaneous; Peel strength; Power networks and lines; Strips; superconducting coil; Superconducting magnets; SUPERCONDUCTIVITY; Thermal cycling; Various equipment and components; Windings; WIRE; Short term; Performance evaluation; Thermal cycle; Addressing; Thin film; Degradation; Critical current; Impregnated material; C-axis peel strength; Magnet coils; High field; Electrical conductor; Magnetic field; High temperature superconductor; Damaging; Machine windings; Splice; Magnet; coil winding; Mechanical properties; Superconducting coils; Coated material; Superconducting magnet; Impregnation; Electrical network; Peel strength; Stainless steel; 2G HTS; superconducting coil
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/TASC.2012.2233837

The second-generation high-temperature superconductor (2G HTS), Re-Ba-Cu-O coated conductors are known for strong mechanical properties and have numerous potential applications in high magnetic field research and electrical power systems. It has been noted in the community that coated conductors can be prone to performance degradation on thermal cycling when used in epoxy impregnated magnet windings. This degradation has been tied to the c -axis peel strength in the wire. SuperPower is addressing this issue with a short term approach of developing novel technologies in conductor post processing and coil winding technology, which allows building high quality coils with current generation conductor, and a longer term approach of improving wire production to build stronger wire with high c -axis peel strength.