The Transactions of the Korean Institute of Electrical Engineers B (대한전기학회논문지:전기기기및에너지변환시스템부문B)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Fabrication and Characteristics of HTS Field Winding of a 100 hp Synchronous Motor

100마력 동기전동기용 고온초전도 계자권선 제작과 특성

  • Published : 2005.02.01
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Abstract

To develop a 100 hp high temperature superconducting(HTS) motor with high efficiency first in Korea, we fabricated a HTS field winding and test. HTS field winding is composed of sixteen HTS race track shaped coils wound with stainless steel-reinforced Bi-2223 tape conductor by react and wind fabrication method. Nomex paper was used for electrical insulation. Each of four magnet pole assemblies was constructed with four double pancake sub-coils, mechanically stacked and electrically in series. Four magnet assemblies were fixed on an aluminum support structure to make effective heat transfer. The Critical current (Ic) was 41.5A at 77K and self field. However the lowest Ic value of sub-coils was 35A. Joule heat generated by each joints between sub-coils was lower than 1mW at 77K and 34A. And Joule heat generated by the joints between field coils was lower than 10mW at 77K and 34A. Joule heat of the whole field winding was 1W at 77K and 32A. And so, the lowest Ic value of sub-coils was more important than Joule heats generated by all joints. The operating current must be lower than the lowest Ic of all the sub-coils. In this paper, design, construction and testing of HTS field winding, Joule heat generated by the joints, and operating current were discussed.

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References

  1. A. Appleton and R. MacNab, 'A Model Superconducting Motor', Low Temperature and Electric Power, Oxford: Pergamon Press, 1970
  2. P. Thullen, et al., 'Multipole superconducting electric motors for ship propulsion', IEEE Trans. Magnetics, Vol. 11, 1975 https://doi.org/10.1109/TMAG.1975.1058673
  3. Yamaguchi, K., Takahashi, M., Shiobara, R., Kimura, K., 'Development of a 70 MW class superconducting generator', IEEE Trans. on Applied Supercond., Vol. 7, No. 2, 527-530, 1997 https://doi.org/10.1109/77.614557
  4. J.P. Voccio, B.B. Gamble, C.B. Prum, H.J. Picard, '125 HP HTS Motor Field Winding Development', IEEE Trans. on Appl. Supercon., Vol. 7,No. 2, pp. 519-522, 1997 https://doi.org/10.1109/77.614555
  5. G. Papst, B.B. Gamble, A.J. Rodenbush and R. Schottler, 'Development of synchronous motors and generators with HTS field windings', Supercon. Sci. Technol. Vol. 10, 924-926, 1997 https://doi.org/10.1088/0953-2048/10/12/013
  6. M. Frank, et al, 'Long-Term Operational Experience With First Siemens 400kW HTS Machine in Diverse Configurations', IEEE Transactions on applied superconductivity, Vol. 13, No.2, June, 2003 https://doi.org/10.1109/TASC.2003.813013
  7. J.-T. Eriksson, R. Mikkonen, J. Paasi, R. Perala and L. Soderlund, 'A HTS Synchronous Motor at Different Operating Temperature', IEEE Transactions on applied superconductivity, Vol. 7, No.2, June, 1997 https://doi.org/10.1109/77.614556