Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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A Study on Thermal Stability of the Non-insulated HTS Racetrack-type Coil Under Various External Pressures Applied to Straight Sections

무절연 고온 초전도 레이스트랙형 코일의 직선구간 압력변화에 따른 열적 안정성 연구

  • 권오준 (고려대학교 신소재공학과) ;
  • 김광록 (고려대학교 신소재공학과) ;
  • 최윤혁 (고려대학교 신소재공학과) ;
  • 양동규 (고려대학교 신소재공학과) ;
  • 김영균 (고려대학교 신소재공학과) ;
  • 이태성 (연세대학교 전기전자공학과) ;
  • 고태국 (연세대학교 전기전자공학과) ;
  • 이해근 (고려대학교 신소재공학과)
  • Received : 2012.08.16
  • Accepted : 2012.09.05
  • Published : 2012.09.30
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Abstract

An HTS racetrack-type coil without turn-to-turn insulation was characterized by critical current, sudden discharge, and over-current tests with respect to external pressures applied to the straight sections of the coil. The thermal stability of the non-insulated HTS racetrack-type coil was remarkably enhanced with increasing external pressure applied to the straight sections of racetrack-type coil. Furthermore, over-current test results confirmed that the non-insulated HTS racetrack-type coil with increased turn-to-turn thermal contact has the potential to be manufactured into field coils of HTS wind turbine generators with highly enhanced thermal and electrical stabilities.

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References

  1. G. M. Joselin Herbert, S. Iniyan, E. Sreevalsan, and S. Rajapandian, "A review of wind energy technologies", Renew Sustain Energy Rev. vol. 11, pp. 1117-1145, 2007. https://doi.org/10.1016/j.rser.2005.08.004
  2. A. B. Abrahamsen, N. Mijatovic, E. Seiler, T. Zirngibl, C. Trholt, P. B. Nrgrd, N. F. Pedersen, N. H. Andersen, and J. stergrd, "Superconducting wind turbine generators", Supercond. Sci. Technol., vol.23, pp. 034019-034026, 2010. https://doi.org/10.1088/0953-2048/23/3/034019
  3. G. Snitchler, B. Gamble B, C. King, and P. Winn, "10 MW class superconductor wind turbine generators", IEEE Trans. Appl. Supercond., vol. 21, pp. 1089-1092, 2011. https://doi.org/10.1109/TASC.2010.2100341
  4. S. S. Kalsi, K. Weeber, H. Takesue, C. Lewis, H. W. Neumueller, and R. D. Blaugher, "Development status of rotating machines employing superconducting field windings", Proc. IEEE, vol. 92, pp. 1688-1704, 2004. https://doi.org/10.1109/JPROC.2004.833676
  5. S-Y. Hahn, D. K. Park, J. Bascuñán, and Y. Iwasa, "HTS Pancake Coils without Turn-to-Turn Insulation", IEEE Trans. Appl. Supercond., vol. 21, pp. 1592-1595, 2011. https://doi.org/10.1109/TASC.2010.2093492
  6. S-Y. Hahn, D. K. Park, J. Voccio, J. Bascuñán, and Y. Iwasa, "No-Insulation (NI) HTS Inserts for > 1 GHz LTS/HTS NMR Magnets" IEEE Trans. Appl. Supercond. vol. 22, pp. 4302405-4302409, 2011.
  7. Y. G. Kim, S-Y. Hahn, K. L. Kim, O. J. Kwon, and H. G. Lee, "Investigation of HTS Racetrack Coil without Turn-to-Turn Insulation for Superconducting Rotating Machines", IEEE Trans. Appl. Supercond., vol. 22, pp. 5200604-5200607, 2012. https://doi.org/10.1109/TASC.2011.2181931
  8. S-J. Choi, H. C. Jo, Y. J. Hwang, S-Y. Hahn, and T. K. Ko, "A Study on the No Insulation Winding Method of the HTS Coil", IEEE Trans. Appl. Supercond. vol. 22, pp. 4904004-490407, 2012. https://doi.org/10.1109/TASC.2011.2175892
  9. Y. H. ChoI, S-Y. Hahn, J. B. Song, D. G. Yang, and H. G. Lee, "Partial Insulation of GdBCO Single Pancake Coils for Protection-Free HTS Power Applications", Supercond. Sci. Technol., vol. 24, pp. 125013-125018, 2011. https://doi.org/10.1088/0953-2048/24/12/125013
  10. Y. H. Choi, K. L. Kim, O. J. Kwon, D. H. Kang, J. S. Kang, T. K. Ko, and H. G. Lee, "The Effects of Partial Insulation Winding on the Charge-Discharge Rate and Magnetic Field Loss Phenomena of GdBCO Coated Conductor Coils", Supercond. Sci. Technol., vol. 25. pp. 105001, 2012. https://doi.org/10.1088/0953-2048/25/10/105001
  11. D. G. Yang, J. B. Song, K. L. Kim, H. G. Lee, M. W. Park, and H. G. Lee, "Quench Initiation and Propagation in GdBCO Racetrack Pancake Coil for Large-Scale Rotating Machines", J. Supercond. Nov. Magn. vol. 25, pp. 1071-1076, 2012. https://doi.org/10.1007/s10948-011-1362-7
  12. J. B. Song, K. L. Kim, D. G. Yang, J. Y. Jang, T. K. Ko, M. C. Ahn, and H. G. Lee, "Normal Zone Initiation and Propagation Characteristics of a Solid Nitrogen Cooled GdBCO Racetrack Pancake Coil", IEEE Trans. Appl. Supercond. vol 22, pp. 4701704-4701707, 2012. https://doi.org/10.1109/TASC.2011.2180282
  13. K. L. Kim, J. B. Song, D. G. Yang, Y. H. Choi, W. J. Kim, S. H. Kim, and H. G. Lee, "The Effects of External Pressure on the Thermal and Electrical Properties of Stacked GdBCO Coated Conductor Tapes", IEEE Trans. Appl. Supercond., vol. 22, pp. 4701804-4701807, 2012. https://doi.org/10.1109/TASC.2011.2180283
  14. K. Ikizawa, N. Takasu, and Y. Murayama, "Instability of Superconducting Race Track Magnets", IEEE Trans. Magn., vol. 27, pp. 2128-2131, 1991. https://doi.org/10.1109/20.133632
  15. T. Yazawa, M. Urata, G. R. Chandratilleke, and R. Maeda, "Racetrack coil instability resulting from friction head generation at fixtures", IEEE Trans. Appl. Supercond., vol. 3, pp. 312-315, 1993 https://doi.org/10.1109/77.233479
  16. P. W. Bridgman, "The effect of pressure on the thermal conductivity of metals", Proc. Am. Acad. Arts. Sci., vol. 57, pp. 77-127, 1922. https://doi.org/10.2307/20025893
  17. C. Starr, "The pressure coefficient of thermal conductivity of metals", Phys. Rev., vol. 54, pp. 210-216, 1938. https://doi.org/10.1103/PhysRev.54.210