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http://dx.doi.org/10.9714/psac.2013.15.4.026

A numerical study on the feasibility evaluation of a hybrid type superconducting fault current limiter applying thyristors  

Nam, Seokho (Yonsei University)
Lee, Woo Seung (Yonsei University)
Lee, Jiho (Yonsei University)
Hwang, Young Jin (Yonsei University)
Ko, Tae Kuk (Yonsei University)
Publication Information
Progress in Superconductivity and Cryogenics / v.15, no.4, 2013 , pp. 26-29 More about this Journal
Abstract
Smart fault current controller (SFCC) proposed in our previous work consists of a power converter, a high temperature superconducting (HTS) DC reactor, thyristors, and a control unit [1]. SFCC can limit and control the current by adjusting firing angles of thyristors when a fault occurs. SFCC has complex structure because the HTS DC reactor generates the loss under AC. To use the DC reactor under AC, rectifier that consists of four thyristors is needed and it increases internal resistance of SFCC. For this reason, authors propose a hybrid type superconducting fault current limiter (SFCL). The hybrid type SFCL proposed in this paper consists of a non-inductive superconducting coil and two thyristors. To verify the feasibility of the proposed hybrid type SFCL, simulations about the interaction of the superconducting coil and thyristors are conducted when fault current flows in the superconducting coil. Authors expect that the hybrid type SFCL can control the magnitude of the fault current by adjusting the firing angles of thyristors after the superconducting coil limits the fault current at first peak.
Keywords
SFCC; hybrid type; SFCL; thyristor; non-inductive superconducting coil;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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