The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Increment of HTS Magnet's Central Magnetic Field Made of Pancake Windings by Using Separate Sources

여러개의 전원을 이용한 팬케이크 권선으로 구성된 고온초전도 마그넷의 중심자장 증가

  • 이광연 (순천향대 대학원 전기공학과) ;
  • 차귀수 (순천향대 전기통신시스템공학과)
  • Published : 2007.09.01
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Abstract

The development of a magnet for very high magnetic field is usually envisioned with the use of an HTS insert coil. Pancake windings have been commonly used for the insert coil. All pancake windings have been connected in series and excited by a single power source. In that case, it is inevitable to operate some of the pancake windings well below their critical current densities. To increase the central magnetic field of the magnet, this paper proposed a new excitation method of the pancake windings by exciting the pancakes windings independently using multiple power sources. Results of the calculation show proposed method increases the central magnetic field of the magnet which consisted of 8 pancake windings by 17% comparing with excitation by using a single power source.

Keywords

References

  1. M. Beckenbach, et aI., 'Manufacture and Test of a 5 T Bi-2223 Insert Coil,' IEEE Trans. on Applied Superconductivity, Vol.15, No.2, pp.1484-1487, 2005 https://doi.org/10.1109/TASC.2005.849137
  2. H. Lee, J. Bascunan and Y. Iwasa, 'A High-Temperature Superconducting Double-Pancake Insert for an NMR Magnet,' IEEE Trans. on Applied Superconductivity, Vol.13, No.2, pp.1546-1549, 2003 https://doi.org/10.1109/TASC.2003.812770
  3. H. W. Weijers, et aI., 'Development of a 5 T HTS Insert Magnet as Part of 25 T Class Magnets,' IEEE Trans. on Applied Superconductivity, Vol.13, No.2, pp.1363-1399, 2003
  4. Kenji Tasaki, et aI., 'Development of a Bi2223 Insert Coil for a Conduction-Cooled 19 T Superconducting Magnet,' IEEE Trans. on Applied Superconductivity, Vol.15, No.2, pp.1512-1515, 2005 https://doi.org/10.1109/TASC.2005.849150
  5. So Noguchi, et aI., 'An Optimal Design Method for Superconducting Magnets Using HTS Tape,' IEEE Trans. on Applied Superconductivity, Vol.11 , No.1, pp.2308-2311, 2001 https://doi.org/10.1109/77.920322
  6. Cha Wang, Qiuliang Wang, et aI., 'Electromagnetic optimization design of a HTS magnet using the improved hybrid genetic algorithm,' Cryogenics 46, pp.349-353, 2006 https://doi.org/10.1016/j.cryogenics.2005.08.007
  7. M. Kasper, 'Shape Optimization by Evolution Strategy,' IEEE Trans. on Magnetics, Vo1.28, No.2, pp.1556-1559, 1992 https://doi.org/10.1109/20.123995