Title :
The Effects of a Stabilizer Thickness of the YBCO Coated Conductor (CC) on the Quench/Recovery Characteristics
Author :
Kwon, N.Y. ; Kim, H.S. ; Kim, K.L. ; Hahn, S. ; Kim, H.-R. ; Hyun, O.-B. ; Kim, H.M. ; Kim, W.S. ; Park, C. ; Lee, H.G.
Author_Institution :
Dept. of Mater. Sci. & Eng., Korea Univ., Seoul, South Korea
fDate :
6/1/2010 12:00:00 AM
Abstract :
The stabilizer of a YBCO coated conductor (CC) plays a very important role in bypassing the over-current and transferring the heat generated at the moment of a fault. Therefore, one of big issues is to determine the best material for the stabilizer and its dimensions for high performance in a HTS power application system. In the case of a superconducting fault current limiter (SFCL), which requires it to react immediately to any fault, the characteristics of the stabilizer are decisive in limiting the fault current and recovering the superconducting properties during and after quenching. This study examined the electrical and thermal behavior of YBCO CCs with various stabilizer thicknesses in fault mode to determine the effects of the stabilizer thickness on the quench/recovery characteristics of YBCO CCs. In particular, the electric field intensity (E) of YBCO CCs in fault mode were calculated and compared with the experimental results.
Keywords :
barium compounds; fault current limiters; high-temperature superconductors; quenching (thermal); superconducting devices; yttrium compounds; HTS power application system; YBCO; YBCO coated conductor; electric field intensity; electrical behavior; fault mode; over-current bypassing; quench/recovery characteristics; quenching; stabilizer thickness; superconducting fault current limiter; thermal behavior; Electric field intensities $(E)$; YBCO coated conductor (CC); quench/recovery characteristics; stabilizer; superconducting fault current limiter (SFCL);
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2009.2039864
