FORCE TRANSIENTS AT GUIDEWAY BUTT JOINTS IN REPULSIVE MAGNETIC LEVITATION SYSTEM

To provide for thermal expansion, the guideway for the repulsive levitation of high-speed ground transport would be jointed. The presence of these joints (ohmic discontinuities) interrupts the stationary pattern of the eddy-current in the guideway as the superconducting magnet traverses across them. This change in eddy current distribution causes a time transient in the Lorentz force acting on the magnet. The nature of this joint force is of engineering interest especially if it incurs a loss of lift or if its pulsations affect the ride quality. The objective of this paper is to examine the nature of this transient force. The butt joint is considered here. because it represents the worst case. The effect of butt joints on the force components is analyzed by the dynamic circuit theory. Predicted results show very good agreement with measurements.

  • Supplemental Notes:
    • IEEE Power Eng Soc, Summer Meeting, Los Angeles, California, July 16-21, 1978.
  • Corporate Authors:

    Institute of Electrical and Electronics Engineers (IEEE)

    3 Park Avenue, 17th Floor
    New York, NY  United States  10016-5997
  • Authors:
    • Ooi, B T
    • Jain, O P
  • Publication Date: 1978

Media Info

  • Pagination: 8 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00184959
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: Paper F 78 733-8 Preprint
  • Files: TRIS
  • Created Date: Jan 13 1979 12:00AM