A Study on the Levitation Mechanism Based on the Electrodynamic Force for a Maglev Planar Transportation System

동전기력에 기초한 자기 부상 평면 운송 시스템의 부상 메커니즘에 관한 연구

  • 박준혁 (한국철도기술연구원, 철도시스템안전연구본부) ;
  • 백윤수 (연세대학교 기계공학부)
  • Published : 2006.09.01


This paper describes the levitation mechanism using magnetic wheel for a maglev planar transportation system. Rotation of the magnetic wheel where the permanent magnet array is embedded produces the time varying traveling magnetic flux density and the generated magnetic flux density creates the induced levitation force and drag force with the conductor. Because the net drag force is zero, magnetic wheel can only generate the levitation force. Thus, it always guarantees the stability in levitation direction and it does not disturb other directional motion. In this paper, levitation principle of the magnetic wheel is analyzed using distributed field approach and dynamic characteristics of the levitation in the magnetic wheel system are estimated. The feasibility of the proposed levitation mechanism is verified through the several experimental works.


Electrodynamic Force;Magnetic Levitation;Magnetic Wheel;Permanent Magnet;Transportation System


  1. Jayawant, B. V., 1980, Electromagnetic Levitation and Suspension Techniques, Edward Arnold, pp. 1-9
  2. Jung, K. S. and Baek, Y S., 2001, 'Precision Stage Using A Novel Contact-Free Planar Actuator Based on Combination of Electromagnetic forces,' Transactions of the KSMEA, Vol.25, No.11, pp.1863-1872
  3. Lee, S. H. and Baek, Y. S., 2003, 'Feasibility Study of Positioning Device Using Magnetic Suspension System of Out of Plane Direction Forces,' Transactions of the KSME A, Vol. 27, No. 11, pp. 1941-1948
  4. Powell, J. R. and Danby, G. T., 1996, 'Maglev Vehicles,' IEEE potentials, Oct./Nov., pp. 7-12
  5. Fujii, N., Hayashi, G. and Sakamoto, Y., 2000, 'Characteristics of Magnetic Lift, Propulsion and Guidance by Using Magnet Wheels with Rotating Permanent Magnets,' Industry Applications Conference, IEEE, Vol. 1, pp.257-262
  6. Bird, J. and Lipo, T. A., 2003, 'An Electrodynamic Wheel: an Integrated Propulsion and Levitation Machine,' Electric Machines and Drives Conference, IEEE, vol. 3, pp. 1410-1416
  7. Park, J. H., Choi, J. H., Kim, D. H. and Baek, Y. S., 2004, 'Parametric Design of The Levitation Mechanism for Maglev Planar Transportation Vehicle,' IEEE Transactions on Magnetics, Vol. 40, Issue: 4, pp.3069-3071
  8. Park, J. H. and Baek, Y S., 2004, 'Levitation Characteristics of Magnetic Wheel,' IEEE Transactions on Magnetics, submitted for publication