Basic characteristics of high‐ T c   superconductor as a current‐limiting element | Zendy

Nakamura Koichi | Zendy; Ito Yasukazu | Zendy; Kawashima Takao | Zendy

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Basic characteristics of high‐ T c superconductor as a current‐limiting element

Author(s) -

Nakamura Koichi,

Ito Yasukazu,

Kawashima Takao

Publication year - 1992

Publication title -

electrical engineering in japan

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.136

H-Index - 28

eISSN - 1520-6416

pISSN - 0424-7760

DOI - 10.1002/eej.4391120508

Subject(s) - superconductivity , current limiting , schematic , current (fluid) , limiting , critical current , materials science , high temperature superconductivity , condensed matter physics , limiting current , electrical engineering , analytical chemistry (journal) , physics , thermodynamics , chemistry , electrode , mechanical engineering , engineering , electrochemistry , chromatography , quantum mechanics

This paper shows the basic characteristics of a current‐limiting element for the power system using y ‐type high‐ T c superconductor. (1) A YBa 2 Cu 3 O x ‐type superconductor was produced. Its size was 4.7 × 1.5 × 47 mm. (2) Current I and voltage V were measured under the low temperature of 50 to 100 K. (3) The flow resistance and the resistance of the element were defined and evaluated from the I ‐ V characteristics obtained under the conditions of lower temperature than the critical value T c , and larger current density than the critical value J c . (4) The resistance value change due to temperature rise also was evaluated under the larger current than the critical current. (5) A schematic calculation was tried for practical use in some system condition.

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