Normal zone initiation and propagation characteristics of a solid nitrogen cooled GdBCO racetrack pancake coil

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

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number6107558
JournalIEEE Transactions on Applied Superconductivity
Volume22
Issue number3
DOIs
Publication statusPublished - 2012

Bibliographical note

Funding Information:
Manuscript received September 12, 2011; accepted November 11, 2011. Date of publication December 16, 2011; date of current version May 24, 2012. This study was supported by the Mid-career Researcher Program through an NRF grant funded by the MEST (2009-0085369). This study was also supported by the International Collaborative R&D Program of the KETEP grant funded by the Korea government Ministry of Knowledge Economy (MKE).

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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