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Design Principles of Flux-Switch Alternators [includes discussion]

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2 Author(s)
Rauch, S.E. ; NONMEMBER AIEE, University of California, Santa Barbara, Calif. ; Johnson, L.J.

The general problem of the design of a peak-power minimum-volume high-frequency alternator which employs the flux-switch principle is discussed. Included in this paper are analyses of general configuration, generated voltage and frequency, magnetic circuit, generator losses, and materials. A design procedure which employs the use of a set of empirically derived constants which determine various mechanical and electrical parameters is presented. The design charts can be used for flux-switch alternators ranging in power from 100 to 5,000 watts and for shaft speeds from 10,000 to 50,000 rpm. A sample design based on the use of the design charts is developed for a 50,000-rpm 3-kw 250-volt single-phase flux-switch alternator with permanent magnet excitation.

Published in:

Power Apparatus and Systems, Part III. Transactions of the American Institute of Electrical Engineers  (Volume:74 ,  Issue: 3 )