Journal
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
Volume 56, Issue 1, Pages 138-147Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIA.2019.2946120
Keywords
Rotors; Stator windings; Torque; Windings; Torque measurement; Generators; Axial-flux; finite element; magnetic gear; permanent magnet
Funding
- North Carolina Coastal Studies Institute ocean energy
- National Science Foundation [1636704]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1636704] Funding Source: National Science Foundation
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An axial-flux magnetic gear (MG) is integrated into a radial field stator to construct a unique magnetically geared generator for low input speed applications. The high-speed rotor of the axial-flux MG uses a flux-focusing typology. This article presents the stator design and experimental testing of this unique proof-of-principle axial-flux focusing MG generator. The peak torque and active region torque density were measured to be 473 N m and 94.4 N m/L, respectively. The stator of the proposed machine shares the high-speed rotor with the axial-flux MG. Therefore, there is no need for a separate rotor. It is shown that the stator can also be used to provide additional flux into the MG in order to boost torque during transient overshoots.
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