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Magnet Gear with Two-Axial Magnetic Paths

이축 방향의 복합 자기 경로를 갖는 마그네트 기어

  • Kim, Moon Su (Graduate School, Department of Mechanical Engineering, Korea National Univ. of Transportation) ;
  • Jung, Kwang Suk (Department of Mechanical Engineering, Korea National Univ. of Transportation)
  • 김문수 (한국교통대학교 기계공학과 대학원) ;
  • 정광석 (한국교통대학교 기계공학과)
  • Received : 2013.12.04
  • Accepted : 2014.05.26
  • Published : 2014.06.01

Abstract

A magnet gear composed of two layers of permanent magnets repeated circumferentially can transmit the power without mechanical contact. In the topology called by the magnet shutter gear known as the most competitive concept among the existing concepts, the number of pole-pairs on the high speed rotor corresponds to that of low speed rotor through electric steel set functioning as a magnetic modulator. The methodology is classified into radial type and axial type according to its magnetic path as in the motor. However, the magnetic modulator has multiple poles located separately. So, it is very complicated to assemble each module of the magnet gear mechanically and to sustain a mechanical stiffness of the modulator. The practical trouble can be solved partially through reconfiguring the modules. This paper deals with the novel magnetic shutter gear topology varying the magnetic path and its effectiveness is verified through real hardware implementation.

Keywords

Acknowledgement

Supported by : 한국연구재단

References

  1. Kikuchi, S. and Tsurumoto, K., "Trial Construction of a New Magnetic Skew Gear using Permanentmagnet," IEEE Trans. on Magnetics, Vol. 30, No. 6, pp. 4767-4769, 1994. https://doi.org/10.1109/20.334216
  2. Yao, Y. D., Huang, D. R., Hsieh, C. C., Chiang, D. Y., Wang, S. J., and et al., "The Radial Magnetic Coupling Studies of Perpendicular Magnetic Gears," IEEE Trans. on Magnetics, Vol. 32, No. 5, pp. 5061-5063, 1996. https://doi.org/10.1109/20.539490
  3. Furlani, E. P., "A Two-dimensional Analysis for the Coupling of Magnetic Gears," IEEE Trans. on Magnetics, Vol. 33, No. 3, pp. 2317-2321, 1997. https://doi.org/10.1109/20.573848
  4. Ackerman, B. and Honds, L., "Magnetic Drive Arrangement Comprising a Plurality of Magnetically Cooperating Parts Which are Movable Relative to One Another," US Patent, No. 5633555, 1997.
  5. Atallah, K. and Howe, D., "A Novel Highperformance Magnetic Gear," IEEE Trans. on Magnetics, Vol. 37, No. 4, pp. 2844-2846, 2001. https://doi.org/10.1109/20.951324
  6. Rasmussen, P. O., Andersen, T. O., Jorgensen, F. T., and Nielsen, O., "Development of a Highperformance Magnetic Gear," IEEE Trans. on Industrial Application, Vol. 41, No. 3, pp. 764-770, 2005. https://doi.org/10.1109/TIA.2005.847319
  7. Yun, D. W., Choi, S. K., Lee, S. H., and Yu, I. S., "Development of Magnetic Gear," Proc. of KSPE Autumn Conference, pp. 53-54, 2008.
  8. Neuland, A. H., "Apparatus for Transmitting Power," US Patent, No. 1171351, 1916.
  9. Atallah, K., Calverley, S. D., and Howe, D., "Design, Analysis and Realization of a High-performance Magnetic Gear," IEEE Proc. of Electrical Power Application, Vol. 151, No. 2, pp. 135-143, 2004. https://doi.org/10.1049/ip-epa:20040224
  10. Jung, K. S., "Speed Increasing or Decreasing Device using Permanent Magnets," KOR Patent, No. 10-1282613-0000, 2013.