Development of REBCO superconducting transformers with current limiting function

Tomoaki Tsutsumi, Akira Tomioka, Masataka Iwakuma, Hiroshi Okamoto, Yoshihiro Gosho, Hidemi Hayashi, Yasuhiro Iijima, Takashi Saito, Takeshi Ohkuma, Akihiko Tagomori, Teruo Izumi, Yuh Shiohara

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


RE1Ba2Cu3O7-δ(RE: Rare Earth, Y, Gd and so on, REBCO) superconducting tapes have high performance in critical current density, Jc, property even in high magnetic field and at liquid nitrogen temperature. We have proposed the ac loss reduction method of REBCO superconducting tape, which are the combination of a laser-scribing into a multifilamentary structure and a special winding process. Using the ac loss reduction technique, we could realize REBCO superconducting transformers with the advantage of light weight, compactness and high efficiency in comparison to conventional one. Further we aim to add a current limiting function to REBCO superconducting transformers. Recently we manufactured a 10kVA four-winding transformer with REBCO tapes. We carried out a sudden short circuit test and investigated the response against the fault excess current. We developed a numerical analysis program so as to quantitatively simulate the phenomena taking into account of a flux-flow resistance. As a result, it was shown that the whole of the REBCO winding did not shift to normal state even though the current exceeded the critical current all over the length. In this paper, we report the outlines.

Original languageEnglish
Pages (from-to)1115-1120
Number of pages6
JournalPhysics Procedia
Publication statusPublished - 2012
EventSuperconductivity Centennial Conference, SCC 2011 - The Hague, Netherlands
Duration: Sept 18 2011Sept 23 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


Dive into the research topics of 'Development of REBCO superconducting transformers with current limiting function'. Together they form a unique fingerprint.

Cite this