Title :
Development of high temperature superconducting fault current limiting transformer (HTc-SFCLT) with Bi2212 bulk coil
Author :
Kurupakorn, C. ; Hayakawa, N. ; Kashima, N. ; Nagaya, S. ; Noe, M. ; Juengst, K.-P. ; Okubo, H.
Author_Institution :
Dept. of Electr. Eng., Nagoya Univ., Japan
fDate :
6/1/2004 12:00:00 AM
Abstract :
We have been developing a high temperature superconducting fault current limiting transformer (HTc-SFCLT) with functions of both superconducting transformer in normal operating condition and superconducting fault current limiter in fault condition. The ratings of the developed HTc SFCLT are 3-phase, 6.25 kVA, 275/105 V. The secondary coil consists of melt cast processed (MCP)-BSCCO2212/CuNi composite bulk monofilar coils, whereas the primary coil is composed of a copper coil, both of which are immersed in liquid nitrogen bath together with the iron core. Experimental results revealed the operational feasibility of HTc-SFCLT through no-load and short-circuit tests, current limiting test and recovery test.
Keywords :
bismuth compounds; calcium compounds; fault current limiters; high-temperature superconductors; strontium compounds; superconducting coils; superconducting device testing; superconducting magnets; superconducting transformers; 105 V; 275 V; 6.25 kVA; Bi2212 bulk coil; Bi2Sr2CaCu3O8-CuNi; MCP-BSCCO2212; composite bulk monofilar coils; copper coil; current limiting test; high temperature superconducting fault current limiting transformer; liquid nitrogen; melt cast processed coils; no-load tests; normal operating condition; operational feasibility; primary coil; recovery test; secondary coil; short-circuit tests; superconducting fault current limiter; superconducting transformer; Fault current limiters; Fault currents; High temperature superconductors; Impedance; Nitrogen; Superconducting cables; Superconducting coils; Superconducting magnetic energy storage; Superconducting transmission lines; Testing; MCP-BSCCO2212; recovery; superconducting fault current limiter; superconducting transformer;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2004.830313
