Browse > Article
http://dx.doi.org/10.5207/JIEIE.2007.21.10.046

Increase of Operational Current in a SFCL using Series or Parallel Coupling of Coils  

Lim, Sung-Hun (숭실대학교 전기공학부)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.21, no.10, 2007 , pp. 46-51 More about this Journal
Abstract
The fault current limiting characteristics of superconducting fault current limiter(SFCL) using magnetic coupling of two coils were investigated. This SFCL consists of a high-TC superconducting(HTSC) element and two coils with series or parallel connection on the same iron. In normal time, the inner magnetic fluxes generated by two coils are canceled in case that the HTSC element keeps superconducting state. However, in case that the resistance of the HTSC element happens by a short-circuit the magnetic fluxes, not cancelled, induce the voltages across two coils and the fault current can be limited by the impedance of this SFCL. This SFCL has the merit that the operational current of SFCL can be increased higher than the critical current of the superconducting element by adjusting the inductance ratio between two coils. To confirm its operation, the circuit for the fault simulation was constructed. From the measured voltage and current of the SFCL, it was confirmed that the operating current of this SFCL increased more than that of HTSC element's independent operation.
Keywords
Fault Current Limiting Characteristics; Superconducting Fault Current Limiter(SFCL); Magnetic Coupling; Inductance Ratio;
Citations & Related Records
연도 인용수 순위
  • Reference
1 W. Paul and M. Chen, 'Superconducting control for surge currents,' IEEE Spectrum, vol. 35, pp. 49-54, May 1998
2 T. Onishi, M. Kawasumi, K.-I. Sakaki and R. Akimoto, 'An experimental study on a fast self-acting magnetic shield type superconducting fault current limiter,' IEEE Trans. Appl. Supercond., vol. 12, pp. 868-871, Mar. 2002   DOI   ScienceOn
3 E. Thuries, V. D. Pham, Y. Laumond, T. Verhaege, A. Fevrier, M. Collet, and M. Bekhaled, 'Toward the superconducting fault current limiter,' IEEE Trans. On Power Del., vol. 6, no. 2, pp. 801-808, April 1991   DOI   ScienceOn
4 S. H. Lim, H. S. Choi, and B. S. Han, 'The fault current limiting characteristics of a flux-lock type high-TC superconducting fault current limiter using a series resonance,' Cryogenics, vol. 44, pp. 249-254, April 2004   DOI   ScienceOn
5 S. H. Lim, H. S. Choi, and B. S. Han, 'Fault Current Limiting Characteristics due to Winding Direction between Coil 1 and Coil 2 in a flux-lock type SFCL,' Fhys. C, vol. 416, pp. 34-42, November 2004
6 H. Yamaguchi, T. Kataoka, K. Yaguchi, S. Fujita, K. Yoshikawa, and K. Kaiho, 'Characteristics Analaysis of Transformer Type Superconducting Fault Current Limiter,' IEEE Trans. Appl. Supercond., vol. 14, no. 2, pp. 815-818, June 2004   DOI   ScienceOn
7 Sung-Hun Lim, Hyo-Sang Choi, Seokcheol Ko, Hyeong-Gon Kang, and Byoung-Sung Han, 'Fault Current Limiting Characteristics of New Resistive Type Superconducting Fault Current Limiter using Flux Linkage,' phys. Stat sol. (c), vol. 2, no. 5, pp. 1755-1760, March 2005   DOI   ScienceOn
8 S. H. Lim, H. S. Choi, and B. S. Han, 'The improved hysteresis characteristics of flux-lock type SFCL using third winding,' Phys. C, vol. 406, pp. 37-45, July 2004   DOI   ScienceOn