Theoretical analysis of current density distribution in superconducting plate of flat type superconducting fault current limiter

Autor:	Yasunobu Yokomizu, Masatoyo Shibuya, K Sannomiya, Hirotaka Shimizu, Toshiro Matsumura, Michiharu Ichikawa, N Watanabe, Hiroyuki Kado
Rok vydání:	2006
Předmět:	Superconductivity Physics History Condensed matter physics Supercurrent Superconducting magnetic energy storage Computer Science Applications Education Current limiting Condensed Matter::Superconductivity Electromagnetic shielding Fault current limiter Current density Electrical impedance
Zdroj:	Journal of Physics: Conference Series. 43:933-936
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/43/1/228
Popis:	We have proposed an inductive (magnetic shielding) type of superconducting fault current limiter which consists of a high Tc superconducting plate in doughnut shape and spiral coil as the primary winding. In this paper, the current density distribution in the superconducting plate was theoretically investigated to understand the fundamental performance of this type of current limiter. For the analysis, we developed the calculation method for the current density. The current density is distributed almost uniformly in the superconducting plate. The impedance of the current limiter changes every moment not only in current limiting operation but also normal operation. That is because the resistance in the superconducting plate and magnetic coupling condition in the current limiter also change with time. Relatively large impedance rapidly appears in the current limiter when the current density in all the area of the superconducting plate attain to the critical current density.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8f459fce5ad9572972d6a9fb0b700f02 https://doi.org/10.1088/1742-6596/43/1/228 Zobrazit plný text záznamu