THE UNBALANCED MAGNETIC PULL AND ITS EFFECTS ON VIBRATION IN A THREE-PHASE GENERATOR WITH ECCENTRIC ROTOR

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• 作者：GUO ; D. ; CHU ; F. ; CHEN ; D.
• 刊名：Journal of Sound and Vibration
• 出版年：2002
• 出版时间：July 4, 2002
• 年：2002
• 卷：254
• 期：2
• 页码：297-312
• 全文大小：656 K

文摘

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.