High temperature superconducting demonstrator transformer: design considerations and first test results

• Published in: IEEE transactions on magnetics Vol. 35; no. 5; pp. 3559 - 3561
• Main Authors: Sykulski, J.K., Goddard, K.F., Stoll, R.L.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.09.1999; Institute of Electrical and Electronics Engineers
• Subjects: Applied sciences; Bulk density; Critical current density; Diverters; Electrical engineering. Electrical power engineering; Electromagnets; Exact sciences and technology; Flux; Flux density; High temperature superconductors; Leakage; Loss measurement; Oil insulation; Power transformer insulation; Superconducting coils; Superconducting device characterization, design, and modeling; Superconducting films; Superconducting materials; Superconducting tapes; Superconducting transmission lines; Superconductivity; Testing; Transformers; Various equipment and components; Electrical engineering; Electric transformer; Iron loss; Cooling system; Superconductive winding; Superconductor device; Experimental study; Power transformer; High temperature superconductor; Cuprates
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/20.800589

The paper highlights main features of a 10 kVA single-phase high temperature superconducting (HTS) demonstrator transformer built recently at the University of Southampton. One winding is made of BPSCCO-2223 tape with bulk critical current density of 22A/mm/sup 2/ at 77 K. Flux diverters have been used to reduce the radial component of leakage flux density in the HTS tape. Initial test results are shown with particular emphasis on measurements of ac losses.