EMD-Based Analysis of Industrial Induction Motors With Broken Rotor Bars for Identification of Operating Point at Different Supply Modes
EMD-Based Analysis of Industrial Induction Motors With Broken Rotor Bars for Identification of Operating Point at Different Supply Modes
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DOI：
10.1109/tii.2013.2289941
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发表时间：
2014-05
影响因子：
12.3
通讯作者：
J. Faiz;V. Ghorbanian;B. Ebrahimi
中科院分区：
文献类型：
--
作者：
J. Faiz;V. Ghorbanian;B. Ebrahimi
本文提出了一种有效的方法来识别在线启动和逆变器供电的工业感应电机中的断条故障。该方法的基础是确定故障电机电流的不同频带，并提取通过经验模态分解（EMD）开发的适当的固有模态函数（IMF）。经过分析证明，两个特定的 IMF（直接启动模式下的 IMF2 和逆变器供电模式下的 IMF3）可用于精确预测故障感应电机的行为。该方法的精度显示在不同的工作点，包括不同的负载、故障和参考速度。结果表明，分布断条处的运动不对称性显着减少。此外，所提出的方法即使在空载/轻载时也能够确定故障电机的工作点。最后，使用 Filippetti 准则，并分析开发了一个新方面来证明 IMF3 随逆变器供电感应电机速度的变化。分析结果经实验验证。
This paper proposes a competent method for broken bars fault identification in line-start and inverter-fed industrial induction motors. The basis of the proposed method is to determine different frequency bands of the faulty motor current and extract a proper intrinsic mode function (IMF) developed by empirical mode decomposition (EMD). It is analytically proved that two specific IMFs, IMF2 in line-start mode and IMF3 in inverter-fed mode, can be used for precise prediction of the behavior of a faulty induction motor. The precision of the method is shown at different operating points, including different loads, fault, and reference speeds. The results indicate that the motor asymmetry is remarkably reduced at distributed broken bars. In addition, the proposed method is capable of determining the operating point of the faulty motor even at no/light loads. Finally, the Filippetti criterion is used, and a new aspect is analytically developed to justify the variations of IMF3 with speed in an inverter-fed induction motor. The analytical results are verified by experiments.