This paper derives the closed form 3-D analytical torque equations for an ideal radial Halbach rotor magnetic coupling. The performance of the radial Halbach coupling is then compared with an ideal axial Halbach rotor coupling. The closed form equations and comparison gives insight into the upper torque density limits of Nd-Fe-B based magnetic devices.
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A High Torque Density Halbach Rotor Coaxial Magnetic Gear
This paper presents the design, analysis, and experimental testing results for a 5.67:1 Halbach rotor magnetic gearbox with a ferromagnetic back support. Using 3-D finite element analysis software the Halbach magnetic gearbox was calculated to achieve a volumetric torque density of 284N·m/L with only an active region outer diameter of 120mm. The experimental prototype obtained an active region volumetric torque density of 261.4N·m/L
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- Award ID(s):
- 1827801
- PAR ID:
- 10106669
- Date Published:
- Journal Name:
- IEEE International Conference on Electrical Machines and Drives
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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