Normal Zone Initiation and Propagation Characteristics of a Solid Nitrogen Cooled GdBCO Racetrack Pancake Coil

Song, J. B.; Kim, K. L.; Yang, D. G.; Jang, J. Y.; Ko, T. K.; Ahn, M. C.; Lee, H. G.

doi:10.1109/TASC.2011.2180282

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Normal Zone Initiation and Propagation Characteristics of a Solid Nitrogen Cooled GdBCO Racetrack Pancake Coil

Song, J. B.;
Kim, K. L.;
Yang, D. G.;
Jang, J. Y.;
Ko, T. K.;
... Lee, H. G.;
외 1명

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초록

This paper presents quench test results, of both experiment and simulation, of a racetrack pancake coil wound with a GdBCO-coated conductor tape in a solid nitrogen (SN2) cooling system at 58 K. The longitudinal normal zone propagation velocities in the curved section were 2 times faster than those in the straight section. Therefore, the straight section should be protected more than the curved section when using racetrack-type, GdBCO pancake coils in large-scale rotating machines. The simulated results showed good agreement with the experimentally observed normal zone initiation times.

키워드

GdBCO; normal zone propagation (NZP); protection; racetrack pancake (RP) coil; solid nitrogen (SN2)

제목: Normal Zone Initiation and Propagation Characteristics of a Solid Nitrogen Cooled GdBCO Racetrack Pancake Coil

저자: Song, J. B.; Kim, K. L.; Yang, D. G.; Jang, J. Y.; Ko, T. K.; Ahn, M. C.; Lee, H. G.

DOI: 10.1109/TASC.2011.2180282

발행일: 2012-06

유형: Article; Proceedings Paper

저널명: IEEE Transactions on Applied Superconductivity

권: 22

호: 3