Details

Autor(en) / Beteiligte

• 심정욱
• 현옥배
• 박권배
• 임성우
• 김혜림
• 이방욱
• 오일성

Titel

전력용 반도체 소자를 적용한 하이브리드 초전도 한류기 동작 신뢰도 향상

Ist Teil von

• 한국초전도.저온논문지, 2007, 9(3), , pp.57-61

Ort / Verlag

한국초전도저온학회

Erscheinungsjahr

2007

Link zum Volltext

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• The current limiting characteristics of hybrid SFCL with additional power electronic devices was investigated in order to improve operation reliabilities. The hybrid SFCL developed consists of a superconducting trigger (S/T) part, a fast switch (F/S) module and a current limiting (C/L) part. Although hybrid SFCL had shown a excellent current limiting characteristics, this device was rather vulnerable to the residual arc currents which could exist during fast switch operation. This undesirable arc should be extinguished as quickly as possible in order to implement perfect fault current commutation. So, in order to eliminate the residual arcs between fast switch contacts, the power electronic devices (IGBT or GTO) were connected in series between the S/T part and the interrupter of the F/S module. According to the fault tests conducting with an input voltage of $270\;V_{rms}$ and a fault current of $5\;kA_{rms}$, The power electronic devices could perfectly remove the arc generated between the contacts of the interrupter within 4 ms after the fault occurred. From the test analysis, it was confirmed that the hybrid SFCL could enhance the operation reliability by adopting additional power electronic devices.