Improvement on Current Limiting Characteristics of a Flux-Lock Type SFCL Using E-I Core

Author

Lim, Sung-Hun ; Moon, Jong-Fil ; Kim, Jae-Chul

Author_Institution

Dept. of Electr. Eng., Soongsil Univ., Seoul, South Korea

Volume

19

Issue

3

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

1904

Lastpage

1907

Abstract

We investigated the current limiting characteristics of a flux-lock type superconducting fault current limiter (SFCL) using an E-I core. Unlike the flux-lock type SFCL using a two-legged common coil (C-C) core, two parallel connected coils and a high-T_C superconducting (HTSC) element were placed on the left leg of a three-legged E-I core and an air gap was introduced into the central leg. Through the analyses for the fault current limiting experiments, the two parallel magnetic flux paths was confirmed to be contributed to the prevention of the magnetic saturation of the iron core and the improvement of the current limiting characteristics of the flux-lock type SFCL.

Keywords

air gaps; fault current limiters; high-temperature superconductors; magnetic cores; superconducting coils; E-I core; air gaps; current limiting characteristics; flux-lock type SFCL; high-T_C superconducting element; magnetic flux paths; magnetic saturation; power grids; superconducting fault current limiter; two-legged common coil core; Current limiting characteristics; E-I core; flux-lock type SFCL; magnetic saturation;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2009.2017711

Filename

5109526