The Effects of a Stabilizer Thickness of the YBCO Coated Conductor (CC) on the Quench/Recovery Characteristics

• Published in: IEEE transactions on applied superconductivity 2010-06, Vol.20 (3), p.1246-1249
• Main Authors: 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
• Format: Article
• Language: English
• Subjects: Applied sciences; Carbon capture and storage; COATINGS; Conducting materials; Conductors; Conductors (devices); Constraining; COPPER OXIDE; Electric connection. Cables. Wiring; Electric field intensities (E); ELECTRICAL CONDUCTORS; Electrical engineering. Electrical power engineering; Electrical power engineering; Electromagnets; Electronics; Exact sciences and technology; Fault current limiters; Fault currents; Faults; Heat transfer; High temperature superconductors; MATHEMATICAL ANALYSIS; Miscellaneous; Power networks and lines; quench/recovery characteristics; Quenching; QUENCHING MECHANISMS; Recovery; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; stabilizer; Superconducting devices; superconducting fault current limiter (SFCL); Superconducting materials; SUPERCONDUCTIVITY; SUPERCONDUCTORS; Thermal quenching; Various equipment and components; YBCO coated conductor (CC); YBCO superconductors; Yttrium barium copper oxide; YTTRIUM OXIDE
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/TASC.2009.2039864

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.