SUPERCONDUCTING MAGLEV AND LSM DEVELOPMENT IN CANADA

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

    3 Park Avenue, 17th Floor
    New York, NY  USA  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