A Magnetic Gearbox With an Active Region Torque Density of 239 N.m/L
The authors would gratefully like to thank the JMAG Corporation for the use of their FEA software and the North Carolina Coastal Studies Institute for the financial support.
IEEE Transactions on Industry Applications
In this paper, a 1:4.25 ratio ferrite magnet and Nd-Fe-B magnet flux-focusing magnetic gearbox with a high pole count is analyzed. A simple parameter sweep analysis is used to show that higher than previously published torque density values are achievable. Experimental results are then presented for the Nd-Fe-B design that confirm the calculations and also demonstrate that the proposed magnetic gearbox can operate with a low torque ripple.
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Uppalapati, K. K., Calvin, M. D., Wright, J. D., Pitchard, J., Williams, W. B., & Bird, J. Z. (2018). A Magnetic Gearbox With an Active Region Torque Density of 239 N· m/L. IEEE Transactions on Industry Applications, 54(2), 1331-1338.