With the successful commercialization of Bi-2223 powder-in-tube wire, many attempts to the R & D of the high-Tc superconducting (HTS) magnets for high magnetic field applications are now being implemented actively. Although operating temperature of HTS magnet must be kept in the designed level, the magnetic energy and mechanical disturbance can make the operational temperature of HTS magnet unstable. Especially, generated heat energy of inner HTS winding is apt to accumulate, so the normal region appears in HTS winding. This paper deals with the quenching characteristic of reinforced Bi-2223 wire and two bare Bi-2223 wires in adiabatic condition. The minimum quench energy (MQE) of HTS wires was affected by the material and ratio of their matrix. In the same condition, the normal zone propagation (NZP) energy of nonreinforced HTS wire was smaller than that of reinforced HTS wire.
Bibliographical noteFunding Information:
Manuscript received September 20, 2005. This work was supported by a grant from the Center for Applied Superconductivity Technology of the 21st Century Frontier R&D Program funded by the Ministry of Science and Technology, Republic of Korea. K. Y. Yoon, M. C. Ahn, and T. K. Ko are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea (e-mail: firstname.lastname@example.org). D. K. Bae is with the Korea Institute of Machinery and Materials, Daejeon, Korea (e-mail: email@example.com). H. Kang is with Hyundai Heavy Industrial Co. Ltd., Yongin, Korea (e-mail: firstname.lastname@example.org). S.-J. Lee is with the Department of Electrical Engineering, Uiduk University, Kyongju 780-713, Korea (e-mail: email@example.com). H. M. Kim is with the LS Industrial System Co. Ltd., Chunju, Korea (e-mail: firstname.lastname@example.org). Y. S. Yoon is with the Electrical Engineering Department, Ansan College of Technology, Danwon-Gu, Ansan 425-792, Korea (e-mail: email@example.com). Digital Object Identifier 10.1109/TASC.2005.869650
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering