Skip to main content
SpringerLink
Log in

Influence of AC External Magnetic Field on the Levitation Force Relaxation of HTS Bulk Above NdFeB Guideway

  • Original Paper
  • Published:
Journal of Superconductivity and Novel Magnetism Aims and scope Submit manuscript

Abstract

In the present High-Temperature Superconducting (HTS) maglev vehicle system, the air gaps between the adjacent permanent magnets make the magnetic fields above the NdFeB guideway non-uniform. So one is required to study the characteristics of levitation force of the HTS bulk influenced by non-uniform fields. In this paper, we have studied the characteristics of the levitation force relaxation by an experiment in which the AC external magnetic field generated by an electromagnet is used to simulate the time-varying external magnetic field caused by the inhomogeneity of the NdFeB guideway. From the experiment results, it is found that the levitation force is attenuated with the application of the AC external magnetic field, and the decay is increased with the amplitude of the AC magnetic field, but the decay is almost independent of the frequency of the AC magnetic field.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Hull, J.R.: Supercond. Sci. Technol. 13, R1 (2000)

    Article  ADS  Google Scholar 

  2. Moon, F.C.: Superconducting Levitation. Wiley, New York (1994)

    Google Scholar 

  3. Shultz, L., de Haas, O., Verges, P., Beyer, C., Rohlig, S., Olisen, H., Kuhn, L., Berger, D., Noteboom, U., Funk, U.: IEEE Trans. Appl. Supercond. 15, 2031–2035 (2005)

    Article  Google Scholar 

  4. Putman, P.T., Zhou, Y.X., Fang, H., Klawitter, A., Salama, K.: Supercond. Sci. Technol. 18, S6–S9 (2005)

    Article  ADS  Google Scholar 

  5. Wang, J., Wang, S., Zeng, Y., Huang, H., et al.: Physica C, Supercond. 378–381, 809–814 (2002)

    Article  Google Scholar 

  6. Liu, M., Wang, S., Wang, J., Ma, G.: J. Supercond. Nov. Magn. 21, 431–435 (2008)

    Article  Google Scholar 

  7. Wang, S.Y., Wang, J.S., Ren, Z.Y., et al.: High temperature superconducting Maglev equipment on vehicle. Physica C 386, 531–535 (2003)

    Article  ADS  Google Scholar 

  8. Tachi, Y., Uemura, N., Iwasa, Y., et al.: Physica C 357–360, 771 (2001)

    Article  Google Scholar 

  9. Sanchez, A., Navau, C.: Physica C 364–365, 360 (2001)

    Article  Google Scholar 

  10. Ohyama, T., Shimizu, H., et al.: IEEE Trans. Appl. Supercond. 11, 1988–1991 (2001)

    Article  Google Scholar 

  11. Takase, K., Shindo, S., Demachi, K., et al.: J. Mater. Process. Technol. 108, 152 (2001)

    Article  Google Scholar 

  12. Smolyak, B.M., Ermakov, G.V., Chubraeva, L.I.: Supercond. Sci. Technol. 20, 406 (2007)

    Article  ADS  Google Scholar 

  13. Zhang, L., Wang, S., Wang, J., et al.: Physica C 467, 96–100 (2007)

    Article  ADS  Google Scholar 

  14. Zhang, L., Wang, J., Wang, S., et al.: Physica C 467, 27–30 (2007)

    Article  ADS  Google Scholar 

  15. Tseng, Y.S., Chiang, C.H., Chan, W.C.: Physica C 411, 332–334 (2004)

    Article  Google Scholar 

  16. Yamagishi, K., Ogawa, J., Tsukamoto, O., et al.: Physica C 392–396, 659 (2003)

    Article  Google Scholar 

  17. Ogawa, J., Iwamoto, M., Yamagishi, K., et al.: Physica C 386, 26 (2003)

    Article  ADS  Google Scholar 

  18. Bean, C.P.: Rev. Mod. Phys. 36, 31–39 (1964)

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. School of Computer Science and Technology, Southwest University of Science and Technology, Mianyang, Sichuan, 621000, P.R. China

    Minxian Liu

  2. Department of Electrical Engineering and Automation, Luoyang Institute of Science and Technology, Luoyang, Henan, 471023, P.R. China

    Yiyun Lu

  3. Applied Superconductivity Laboratory, Southwest Jiaotong University, Chengdu, Sichuan, 610031, P.R. China

    Suyu Wang & Guangtong Ma

Authors
  1. Minxian Liu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Yiyun Lu
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Suyu Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Guangtong Ma
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Minxian Liu.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Liu, M., Lu, Y., Wang, S. et al. Influence of AC External Magnetic Field on the Levitation Force Relaxation of HTS Bulk Above NdFeB Guideway. J Supercond Nov Magn 24, 1809–1813 (2011). https://doi.org/10.1007/s10948-011-1128-2

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10948-011-1128-2

Keywords

Search

Navigation