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http://dx.doi.org/10.5762/KAIS.2017.18.7.726

Axial magnetic gear with a closed magnetic path  

Jung, Kwang Suk (Department of Mechanical Engineering, Korea National University of Transportation)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.18, no.7, 2017 , pp. 726-733 More about this Journal
Abstract
A magnetic shutter gear is a device that transfers mechanical power by synchronizing the magnetic field between permanent magnet layers facing circumferentially through a harmonic modulator. However, magnetic gears uses many rare-earth permanent magnets to guarantee comparable torque density to that of mechanical reducer. Hence, we propose a novel axial magnetic gear with a dramatically reduced number of permanent magnets and a closed magnetic path. The torque of the system was compared to that of an existing shutter gear through a harmonic analysis of the air-gap magnetic field. The modulator thickness and open ratio were considered as the primary design parameters, and the cogging effect was analyzed for variation of the reduction ratio. A dynamic model between the high-speed side and low-speed side was derived, and position control was performed for a constructed hardware implementation.
Keywords
Axial magnetic gear; Cogging effect; Finite element analysis; Harmonic modulator; Linear control; Magnetic path; Parametric analysis;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 K. Atallah, D. Howe, "A novel high-performance magnetic gear", IEEE Trans. on Magnetics, vol. 37, no. 4, pp. 2844-2846, 2001. DOI: https://doi.org/10.1109/20.951324   DOI
2 K. Ogata, Modern control engineering, pp. 299-300, Prentice-Hall, 1990.
3 P. Rasmussen, T. Andersen, F. Jorgensen, O. Nielsen, "Development of a high-performance magnetic gear", IEEE Trans. on Industry Applications, vol. 41, no. 3, pp. 764-770, 2005. DOI: https://doi.org/10.1109/TIA.2005.847319   DOI
4 K. Jung, "Speed control of the magnet gear-based speed reducer for non-contact power transmission", J. of Korea Academia-Industrial Cooperation Soc., vol. 17, no. 7, pp. 380-388, 2016. DOI: https://doi.org/10.5762/KAIS.2016.17.7.380   DOI
5 K. Atallah, S. D. Calverley, D. Howe, "Design, analysis and realisation of a high performance magnetic gear", IEE Proc.-Electr. Power Appl, vol. 151, no. 2, pp. 135-143, 2004. DOI: https://doi.org/10.1049/ip-epa:20040224   DOI
6 R. Montague, C. Bingham, K. Atallah, "Servo control of magnetic gears", IEEE Trans. on Mechatronics, vol. 17, no. 2, pp. 269-278, 2012. DOI: https://doi.org/10.1109/TMECH.2010.2096473   DOI
7 D. Evans, Z. Zhu, "Influence of design parameters on magnetic gear's torque capability", 2011 IEEE Inter. Electric Machines & Drives Conference(IEMDC), Niagara Falls, pp. 1403-1408, 2011. DOI: https://doi.org/10.1109/IEMDC.2011.5994813   DOI
8 L. Jing, L. Liu, M. Xiong, D. Feng, "Parameters analysis and optimization design for a concentric magnetic gear based on sinusoidal magnetization", IEEE Trans. on Applied Superconductivity, vol. 24, no. 5, pp. 1-5, 2014. DOI: https://doi.org/10.1109/TASC.2014.2340460   DOI
9 L. Jian, K. Chau, "A coaxial magnetic gear with Halbach permanent-magnet arrays", IEEE Trans. on Energy Conversion, vol. 25, no. 2, pp. 319-328, 2010. DOI: https://doi.org/10.1109/TEC.2010.2046997   DOI
10 K. Uppalapati, J. Bird, D. Jia, J. Garner, A. Zhou, "Performance of a magnetic gear using ferrite magnets for low speed ocean power generation", 2012 IEEE Energy Conversion Congress and Exposition(ECCE), Raleigh, NC, pp. 3348-3355, 2012. DOI: https://doi.org/10.1109/ECCE.2012.6342498   DOI