Development of superconducting power equipments is closely related to that of superconducting wires. Recently, continuing from the first generation (1G) BSCCO wire, commercialization of the second generation (2G) wire, coated conductor (CC), is near at hand. SuperPower Inc., has already commercialized 2G wire of 600 m piece length. With the development of CC, superconducting power equipments are actively developed and some research groups reported successful demonstration results of the power devices such as cable, fault current limiter, and so on. Since critical current of commercialized coated conductor (CC) of 1.2 mm width is about 250 A at 77 K, methods like stacking or parallel connection that increase operating current are needed. This paper describes fabrication of large current limiting coil and presents electrical test results. The limiting coil was fabricated by assembling 2 modules in parallel; each module was wound by stacking 4 CC wires on a non-inductive pancake bobbin.
Bibliographical noteFunding Information:
Manuscript received October 20, 2009. First published March 25, 2010; current version published May 28, 2010. This work was supported in part by a Grant from the center for Applied Superconductivity Technology of the 21st Century Frontier R&D Program funded by the Ministry of Education, Science and Technology, KOREA (M104KJ010004-08K1001-00430). This study was supported by the Korea Science and Engineering Foundation (KOSEF) Grant funded by the Korea government (MEST 2009-0085369).
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering