High Temperature, Permanent Magnet Biased, Fault Tolerant, Homopolar Magnetic Bearing Development
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This paper summarizes the development of a magnetic bearing designed to operate at 1 ,000F. A novel feature of this high temperature magnetic bearing is its homopolar construction which incorporates state of the art high temperature, 1,000F, permanent magnets. A second feature is its fault tolerance capability which provides the desired control forces with over one-half of the coils failed. The construction and design methodology of the bearing is outlined and test results are shown. The agreement between a 3D finite element, magnetic field based prediction for force is shown to be in good agreement with predictions at room and high temperature. A 5 axis test rig will be complete soon to provide a means to test the magnetic bearings at high temperature and speed. Copyright © ASME & U.S. Government.
author list (cited authors)
Palazzolo, A., Tucker, R., Kenny, A., Kang, K., Ghandi, V., Liu, J., Choi, H., & Provenza, A.