As a part of the 21st Century Frontier R&D Program in Korea being performed from 2001, a DC Reactor type Superconducting Fault Current Limiter (SFCL) is being developed. The target of the first phase is to develop a 6.6 kV/200 A class 3-phase SFCL as a prototype for a 154 kV class. This prototype SFCL has a magnet wound with a high-Tc superconducting wire (Bi-2223) operating at 65 K. The magnet uses solenoid bobbins with grooves for the tape wire. Its inductance is about 84 mH. An AC-DC power converter was made with Light Trigger Thyristor (LTT) having a phase controller. The maximum voltage is 7 kV. The DC reactor, which is cooled by sub-cooled nitrogen, uses a three phase transformer with dual tap for series connection with a power line. Through several experiments this SFCL shows current limiting performance about 50% of short circuit current at short run tests.
Bibliographical noteFunding Information:
Manuscript received October 20, 2003. This research was supported by a grant from Center for Applied Superconductivity Technology of the 21st Century Frontier R&D Program funded by the Ministry of Science and Technology, Republic of Korea. S. Lee, K. Park, and Y. Lee are with Freecom System Co. Ltd., Seoul 135-010, Korea (e-mail: email@example.com). H. Kang, D. K. Bae, M. C. Ahn, and T. K. Ko are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Korea (e-mail: firstname.lastname@example.org). T. Mun is with Seongnam Polytechnic College, 4 Sansungdong, Susunggu Seongnam city, Kyungeedo, Korea. Digital Object Identifier 10.1109/TASC.2004.830304
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering