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Characteristic Comparison of Linear Thrust Forces for Magnet Wheels

자기 차륜의 선형 추력 특성 비교

  • 심기본 (충주대학교 대학원 기계공학과) ;
  • 정광석 (충주대학교 기계공학과)
  • Published : 2009.11.01

Abstract

As a method obtaining linear thrust force for the magnet wheel producing a strong traction torque, the concept of magnetic shield is suggested and compared with the existing approaches. Specially, as the magnet wheel, in which the permanent magnets rotate mechanically instead of ac driving to make traveling field, is physically similar with the rotary induction motor, there is a periodical force ripple in tangential direction as well as normal direction. But, the force ripple can be suppressed from a shape change of the shield plate. Namely, the change brings out a change of entry and exit effect of the circumferential field for the magnet wheel. The feasibility of the shield concept is verified from simulation and experiment.

Keywords

Magnetic Shield;Magnet Wheel

References

  1. Fujii, N., Ogawa, T. and Matsumoto, T., 1996, 'Revolving Magnets Wheels with Permanent Magnets,' Electrical Engineering in Japan, Vol. 116, No. 1, pp. 106-118 https://doi.org/10.1002/eej.4391160110
  2. Fujii, N. and Chida, M., 1997, 'Three Dimensional Force of Magnet Wheel with Revolving Permanent Magnets,' IEEE Trans. on Magnetics, Vol. 33, No. 5, pp. 4221-4223 https://doi.org/10.1109/20.619716
  3. Bird, J. and Lipo, T. A., 2003, 'An Electrodynamic Wheel : Integrated Propulsion and Levitation Machine,' Proceedings of IEEE, pp. 1410-1416
  4. Shim, K. B., Park, J. K., Lee, S. H. and Jung, K. S., 2008, 'Linear Actuator Using Magnetic Shield of Rotating Magnet Wheel,' Proceeding of KSME conference, pp. 923-925