Electromagnetic Analysis and Experimental Testing of a Flux Focusing Wind Turbine Magnetic Gearbox

Authors

Kang Li, University of North Carolina at Charlotte
Sina Modaresahmadi, University of North Carolina at Charlotte
Wesley B. Williams, University of North Carolina at Charlotte
Jonathan Bird, Portland State UniversityFollow
Jason D. Wright, University of North Carolina at CharlotteFollow
David Barnett, University of North Carolina at Charlotte

Published In

IEEE Transactions on Energy Conversion

Document Type

Citation

Publication Date

4-18-2019

Abstract

The electromagnetic design of the second stage of a 59:1 multistage magnetic gearbox for a wind turbine demonstrator is presented. The multistage series connected magnetic gearbox is composed of a 6.45:1 first stage and 9.14:1 second stage magnetic gear. The magnetic gears utilize a flux focusing spoke type rotor typology with a unique segmented fully laminated design. The electromagnetic impact of structural design changes on the second stage gearbox is considered with respect to torque density. Severe three-dimensional edge effects were encountered that greatly reduced the expect torque density of the second stage magnetic gear. Experimental testing of the multistage magnetic gear highlights unexpected problems associated with eddy current loss and torque ripple.

Description

© Copyright 2019 IEEE - All rights reserved.

Locate the Document

http://doi.org/10.1109/TEC.2019.2911966

DOI

10.1109/TEC.2019.2911966

Persistent Identifier

https://archives.pdx.edu/ds/psu/29966

Citation Details

K. Li, S. Modaresahmadi, W. B. Williams, J. Z. Bird, J. D. Wright and D. Barnett, "Electromagnetic Analysis and Experimental Testing of a Flux Focusing Wind Turbine Magnetic Gearbox," in IEEE Transactions on Energy Conversion, 34(3), pp. 1512-1521, Sept. 2019.