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A Study on the Quench Propagation Properties of Bi-2223 Wire cooled in Liquid Nitrogen  

Yoon Kyung Yong (연세대 대학원 전기전자공학과)
Bae Duck Kweon (연세대 대학원 전기전자공학과)
Ahn Min Cheol (연세대 대학원 전기전자공학과)
Kang Hyung Ku (연세대 대학원 전기전자공학과)
Lee Chan Joo (현대중공업 기계전기연구소)
Yoon Yong Soo (연세대 대학원 전기전자공학과)
Lee Sang Jin (연세대 대학원 전기전자공학과)
Ko Tae Kuk (현대중공업 기계전기연구소)
Publication Information
Progress in Superconductivity and Cryogenics / v.7, no.1, 2005 , pp. 32-36 More about this Journal
Abstract
With the successful commercialization of Bi-2223 powder-in-tube wire , various attempts in the R & D of the high-Tc superconducting (HTS) magnets for high magnetic field applications are being implemented actively. Operating temperature of HTS magnet has to be maintained at the designed level but the magnetic energy and mechanical disturbance can cause unstable operational temperature of HTS magnet. Especially the generated heat energy of inner HTS winding Is apt to be accumulated . so the normal region appears in HTS winding. This paper deals with the quenching characteristics of three kinds of selected Bi-2223 wires : the High Current Density Wire (HC-A) and the High Strength Wire (HS-A) made by AMSC and HTS wire(HW-I) made by Innost The Innost wire has the highest minimum quench energy (MQE). The High Current Density Wire has the highest normal zone Propagation velocity (NZPV).
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