A Flux-Focusing Cycloidal Magnetic Gearbox
This work was supported in part by the University of North Carolina Coastal Studies Institute and in part by the National Science Foundation under Grant 1408310.
IEEE Transactions on Magnetics
This paper investigates the performance of a -25:1 gear ratio cycloidal magnetic gearbox (CMG) with a flux-focusing rotor topology. The performance of the CMG is investigated by conducting an iterative parameter sweep analysis. An active region torque density of 291 Nm/L is calculated to be achievable with a 0.46% torque ripple. The cycloidal gearbox operates utilizing a nonuniform rotor air gap and this has the adverse effect of creating large nonsymmetric radial forces.
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K. Li, J. Bird, J. Kadel and W. Williams, "A Flux-Focusing Cycloidal Magnetic Gearbox," in IEEE Transactions on Magnetics, vol. 51, no. 11, pp. 1-4, Nov. 2015.