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Magnetic Bearings for Inertial Energy StorageThe selection of a noncontacting bearing technique with no wear out phenomena and which is vacuum compatible which is the decisive factor in selecting magnetic bearings for kinetic energy storage was investigated. Unlimited cycle life without degradation is a primary goal. Storage efficiency is a key parameter which is defined as the ratio of the energy remaining to energy stored after a fixed time interval at no load conditions. Magnetic bearings, although noncontacting, are not perfectly frictionless in that magnetic losses due to eddy currents and hysteresis can occur. Practical magnetic bearings, however, deviate from perfect symmetry and have discontinuities and asymmetric flux paths either by design or when controlled in the presence of disturbances, which cause losses. These losses can be kept smaller in the bearings than in a high power motor/generator, however, are a significant factor in selecting the magnetic bearing type.
Document ID
19840004174
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Studer, P. A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 12, 2013
Publication Date
December 1, 1983
Publication Information
Publication: NASA. Langley Research Center Integrated Flywheel Technol., 1983
Subject Category
Spacecraft Propulsion And Power
Accession Number
84N12242
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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