Performance Potential of High Gear Ratio Coaxial Magnetic Gears
The authors would like to thank the JMAG Corporations for the use of their FEA software. This paper is supported by NSF SBIR Award # 2015163.
2021 IEEE International Magnetic Conference (INTERMAG)
It has been traditionally thought that a coaxial magnetic gear (MG) can only have a high volumetric torque density at a low gear ratio. This paper points out that by using the right sized radius and utilizing judicious radial parameter sweep analysis a high torque density can be created that also operates with a high gear ratio. An example design is presented that has a 33:1 gear ratio and a 3-D finite element analysis calculated torque density in excess of 300 Nm/L. The paper also provides a direct torque density comparison of the Halbach rotor MG relative to the surface mounted permanent magnet MG.
Copyright (2021) IEEE
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David Wong, H. Y., & Bird, J. Z. (2021). Performance Potential of High Gear Ratio Coaxial Magnetic Gears. Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/intermag42984.2021.9579919