非额定工况下异步电动机转子故障诊断

L. Dimitrov, V. Chobanov
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引用次数: 2

摘要

由于不同的感应电动机的应用数量不断增加,目前的问题是关于诊断他们的技术状况。有许多不同的方法在线诊断转子在运行过程中发生的早期故障(转子断条、断环等)。其中最常用的方法是利用fft变换(MCSA)方法对定子电流进行频率分析。这很容易应用,并且对于马达结构来说是非侵入性的。在以下材料中考虑的主题是当电机具有不对称电源并且还使用自主功率逆变器时该方法的应用。本文还介绍了感应电动机转子断条实验的特征频率,以及可能的诊断方法。给出了在感应电动机有变频器供电的情况下实现该方法的不同方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Diagnosis of rotor faults of induction motors, operated in non-rated conditions
Since the number of different induction motor applications is continuously increasing, the questions of current interest are those regarding the diagnosis of their technical condition. There are many different methods for on-line diagnostics of incipient rotor faults (broken rotor bars, rings etc.) that occur during their operation. One of the most frequently used method is the frequency analysis of the stator current using the FFT-transformation (MCSA) method. This is easy to apply and is non-invasive with respect to the motor construction. The subject of consideration in the following material is the application of this method when the motor has an asymmetrical power supply and is also using an autonomous power invertor. Also presented are the characteristic frequencies from experiments with a broken induction motor rotor bar as well as possible ways for diagnosis of this condition. Different ways to implement this method are given when the induction motor has a frequency converter supply.
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