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首页> 外文会议>International Symposium on Stability Control of Rotating Machinery(ISCORMA-4); 20070827-31; Calgary(CA) >A LATERAL ROTOR DYNAMIC CALCULATION METHOD FOR ASYNCHRONOUS MACHINES CONSIDERING ELECTROMAGNETIC FORCES BY ANALYZING THE CALCULATED ROTOR ORBIT
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A LATERAL ROTOR DYNAMIC CALCULATION METHOD FOR ASYNCHRONOUS MACHINES CONSIDERING ELECTROMAGNETIC FORCES BY ANALYZING THE CALCULATED ROTOR ORBIT

机译：分析计算的转子轨道的考虑电磁力的异步电机横向转子动力计算方法

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In asynchronous motors several kinds of excitations exist, that cause vibrations. In addition to the mechanical excitations, such as unbalance, there are also occur electromagnetic forces, caused by rotor eccentricities, which cause vibrations. This paper focuses on the influence of electromagnetic forces on the shaft vibrations in asynchronous machines. The coherence between magnetic forces and the orbit of the rotor is shown. Therefore a theoretical method is presented, which describes the influence of the orbit on the damping of the eccentric magnetic fields in the air gap and therefore the influence on the magnetic forces. Based on the theoretical results a practicable method is shown, how to calculate natural rotor frequencies, the limit of rotor stability and forced vibrations in respect of electromagnetic forces in an asynchronous machine by analyzing the calculated rotor orbit.
机译：在异步电动机中，存在几种引起振动的激励。除了诸如不平衡之类的机械激励外，还会出现由转子偏心引起的电磁力，从而引起振动。本文着重研究电磁力对异步电机中轴振动的影响。示出了磁力和转子的轨道之间的相干性。因此，提出了一种理论方法，该方法描述了轨道对气隙中偏心磁场的阻尼的影响，并因此描述了对磁力的影响。根据理论结果，给出了一种可行的方法，即如何通过分析计算出的转子轨道来计算异步电动机中的固有转子频率，转子稳定性极限以及相对于电磁力的强迫振动。

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