Finite element analysis of relative shaft vibrations of two-pole induction motors with static rotor eccentricity

被引:0
|
作者
Werner, Ulrich [1 ]
机构
[1] Siemens AG, Ind, Drive Technol, Large Drives,Ind Dev, D-90441 Nurnberg, Germany
来源
FORSCHUNG IM INGENIEURWESEN-ENGINEERING RESEARCH | 2010年 / 74卷 / 01期
关键词
PULL;
D O I
10.1007/s10010-010-0115-2
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The paper shows a computational methodology for calculating the relative shaft vibrations in the sleeve bearings of two-pole induction machines regarding excitation due to an electromagnetic force, which is caused by static rotor eccentricity. For a worst case calculation concerning the height of exciting magnetic force electromagnetic field damping effects and magnetic resistance concerning the homopolar flux are neglected. The calculated magnetic force, acting on the rotor core with double supply frequency in direction of the smallest air gap, is implemented into a finite element rotor dynamic model. With this model the influence of the rotor speed as well as influence of the direction of the magnetic force on the relative shaft displacements can be analyzed. Therefore the paper shows a computational methodology to check, whether the rotor-bearing design is sensitive for electromagnetic excitations due to static rotor eccentricity and prepares therefore the possibility to introduce improvements during the design phase of the induction motor.
引用
收藏
页码:49 / 61
页数:13
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