Studies on the use of superconducting magnets for levitation, synchronous propulsion and guidance of high speed intercity ground transportation in Canada are reported. For a 100 passenger vehicle weighing 300 kN, a levitation height of 22 cms at 480 km/hr is obtained by the interaction of eight 3.85 x 10 to 5th power amp turn 100 x 30 cm magnets with eddy currents induced in two 80 x 1 cm aluminum guideway strips. In low speed sections, aluminum thickness is graded to 3 cm to maintain total drag (aerodynamic and magnetic) almost speed independent. The variable speed LSM use fifty 5 x 10 to 5th power amp turn 40 x 150 cm magnets on a half pitch of 45 cm. The motor, with split 3-phase guideway windings energized in 5 km block lengths, has 72% efficiency and 0.82 power factor. A favored guidance scheme for a flat-topped elevated guideway (minimizing snow accumulation) uses the interactions of the propulsion magnets with flat null-flux loops overlying the LSM windings and with the edges of the levitation strips. This scheme produces a lateral stiffness of 10 to 6th power N/m and a maximum guidance force equal to vehicle weight. The test facility uses full scale magnets and a 7.6 m dia wheel rotated about a vertical axis with a maximum peripheral speed of 100 km/hr.

  • Availability:
  • Supplemental Notes:
    • Presented at a meeting, Argonne Nat'l Lab., Ill. and Nat'l Accel Lab, Batavia, Ill., September 30-October 2, 1974.
  • Corporate Authors:

    Institute of Electrical and Electronics Engineers (IEEE)

    3 Park Avenue, 17th Floor
    New York, NY  United States  10016-5997
  • Authors:
    • Atherton, D L
    • Eastham, A R
  • Publication Date: 1975-3

Media Info

  • Features: References;
  • Pagination: p. 627-632
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00127628
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: Vol. MAG-11 Proc Paper
  • Files: TRIS
  • Created Date: Dec 16 1975 12:00AM