Magnetic gearboxes -- Design and construction, Finite element method, Magnetic flux, Permanent magnets
This paper presents the design investigation and experimental testing of a flux-focusing magnetic gearbox with a three piece laminated rotor structure. Each rotor is made of a single lamination stack held together via thin lamination bridges. It is calculated that mechanical bridges reduces the torque density from 156Nm/L to 139Nm/L (a reduction of 11%). The experimentally measured torque density is shown to be only 95Nm/L because the magnets were demagnetized during testing.
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Uppalapati, Kiran; Kadel, Joshua; Wright, Jason; Li, Kang; Williams, Wesley; and Bird, Jonathan, "A Low Assembly Cost Coaxial Magnetic Gearbox" (2017). Electrical and Computer Engineering Faculty Publications and Presentations. 412.