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Experimental Studies of the Resistive Superconducting Fault Current Limiter Based on Double-Sided YBCO Thin Films

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5 Author(s)
Gui, Z.X. ; Sch. of Electr. Eng., Southwest Jiaotong Univ., Chengdu, China ; Wang, Y. ; Yan, Z.M. ; Luo, W.B.
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This paper proposes a new thin-film superconducting fault current limiter (SFCL) that is composed of double-sided thin films to improve the compactness of SFCL systems. In the double-sided design with assembling SFCL units on a wafer comes a possibility of freeing from the negative effect of magnetic flux penetration at the film edges by orienting current paths and taking advantage of thermal interplay to synchronize the quenches propagation. In this paper, four different connection patterns of double-sided SFCLs were investigated through experimental methods, and we have obtained these expected thermal and electromagnetic improvements in double-sided-configuration SFCLs. The observed results of the SFCLs during short-circuits measurement confirm that the interplay of thermal effect may effectively synchronize the quenches propagation in back-to-back adjacent YBCO thin films. Ultimately, the presented measurements of the series and parallel connection matrix-type SFCLs, which have high current capacity, suggest that the double-sided configuration can be flexibly used in the design of a high-scale SFCL in a wafer.

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:24 ,  Issue: 1 )

Date of Publication:

Feb. 2014

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