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http://dx.doi.org/10.7736/KSPE.2014.31.6.543

Magnet Gear with Two-Axial Magnetic Paths  

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)
Publication Information
Journal of the Korean Society for Precision Engineering / v.31, no.6, 2014 , pp. 543-550 More about this Journal
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
Harmonic Analysis; Magnet Gear; Magnetic Path; Sensitivity Analysis; Spatial Modulator;
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