Development of a REBCO superconducting transformer with current limiting function

Masataka Iwakuma, A. Tomioka, T. Otonari, T. Ogata, T. Tsutsumi, S. Sato, H. Hayashi, H. Okamoto, Y. Iijima, T. Saitoh, Y. Aoki, T. Koizumi, T. Hasegawa, T. Ohkuma, Y. Gosho, Y. Yamada, T. Izumi, Y. Shiohara

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A single-phase 10 kVA transformer was designed and fabricated with RE 1 Ba 2 Cu 3 0O 7-6 (REBCO, RE: Rare Earth) superconducting tapes to quantitatively investigate the transition phenomenon of REBCO superconducting tapes to normal state due to a fault excess current. The voltage ratio was 1:1 and the rated voltage was 393 V. It had four windings. The primary and secondary windings had auxiliary windings in addition to main ones respectively. The main and auxiliary windings were connected in parallel in the both sides. The addition of the auxiliary windings made it possible to observe the induced normal resistances in the respective main ones individually. First usual performance tests were carried out and a stable operation as designed was confirmed. In steady state almost all of the current flowed in the main windings due to the small leakage reactance between them. At a sudden short-circuit test, the main windings quenched due to excess current over the critical current and the current was reduced to one fortieth as compared with the case of no current limiting function. It was clarified the whole of the main windings did not shift to normal state though the current exceeded the critical current all over the length and the induced normal zone was almost proportional to the primary voltage.

Original languageEnglish
Article number5634082
Pages (from-to)1405-1408
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume21
Issue number3 PART 2
DOIs
Publication statusPublished - Jun 1 2011

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transformers
Superconducting tapes
Critical currents
tapes
critical current
Electric potential
electric potential
reactance
Electric fault currents
performance tests
short circuits
Short circuit currents
Rare earths
leakage
rare earth elements
shift

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Iwakuma, M., Tomioka, A., Otonari, T., Ogata, T., Tsutsumi, T., Sato, S., ... Shiohara, Y. (2011). Development of a REBCO superconducting transformer with current limiting function. IEEE Transactions on Applied Superconductivity, 21(3 PART 2), 1405-1408. [5634082]. https://doi.org/10.1109/TASC.2010.2089592

Development of a REBCO superconducting transformer with current limiting function. / Iwakuma, Masataka; Tomioka, A.; Otonari, T.; Ogata, T.; Tsutsumi, T.; Sato, S.; Hayashi, H.; Okamoto, H.; Iijima, Y.; Saitoh, T.; Aoki, Y.; Koizumi, T.; Hasegawa, T.; Ohkuma, T.; Gosho, Y.; Yamada, Y.; Izumi, T.; Shiohara, Y.

In: IEEE Transactions on Applied Superconductivity, Vol. 21, No. 3 PART 2, 5634082, 01.06.2011, p. 1405-1408.

Research output: Contribution to journalArticle

Iwakuma, M, Tomioka, A, Otonari, T, Ogata, T, Tsutsumi, T, Sato, S, Hayashi, H, Okamoto, H, Iijima, Y, Saitoh, T, Aoki, Y, Koizumi, T, Hasegawa, T, Ohkuma, T, Gosho, Y, Yamada, Y, Izumi, T & Shiohara, Y 2011, 'Development of a REBCO superconducting transformer with current limiting function', IEEE Transactions on Applied Superconductivity, vol. 21, no. 3 PART 2, 5634082, pp. 1405-1408. https://doi.org/10.1109/TASC.2010.2089592
Iwakuma, Masataka ; Tomioka, A. ; Otonari, T. ; Ogata, T. ; Tsutsumi, T. ; Sato, S. ; Hayashi, H. ; Okamoto, H. ; Iijima, Y. ; Saitoh, T. ; Aoki, Y. ; Koizumi, T. ; Hasegawa, T. ; Ohkuma, T. ; Gosho, Y. ; Yamada, Y. ; Izumi, T. ; Shiohara, Y. / Development of a REBCO superconducting transformer with current limiting function. In: IEEE Transactions on Applied Superconductivity. 2011 ; Vol. 21, No. 3 PART 2. pp. 1405-1408.
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