Journal
JOURNAL OF SOUND AND VIBRATION
Volume 254, Issue 2, Pages 297-312Publisher
ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
DOI: 10.1006/jsvi.2001.4088
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The unbalanced magnetic pull (UMP) in a three-phase generator under no-load, caused by dynamic and static eccentricity, is calculated theoretically. The air-gap permeance is expressed as a Fourier series. Analytical expressions of the UMP for any pole-pair number are obtained. Effects of relative eccentricity and pole number on the magnitude of the UMP are obtained. The vibration of a model rotor in a three-phase generator under the action of the UMP and the eccentric force is analyzed by the numerical method and the harmonic analysis. (C) 2002 Elsevier Science Ltd. All rights reserved.
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