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首页> 外文期刊>Journal of power electronics >Oxidation Models of Rotor Bar and End Ring Segment to Simulate Induction Motor Faults in Progress
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Oxidation Models of Rotor Bar and End Ring Segment to Simulate Induction Motor Faults in Progress

机译：转子棒和端环段的氧化模型以模拟感应电动机故障

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摘要

Oxidation models of a rotor bar and end ring segment in an induction motor are presented to simulate the behavior of an induction machine working with oxidized rotor parts which are modeled as rotor faults in progress. The leakage inductance and resistance of the rotor parts are different from normal values because of the oxidation process. The impedance variations modify the current density and magnetic flux which pass through the oxidized parts. Consequently, it causes the rotor asymmetry which induces abnormal harmonics in the stator current spectra of the faulty machine. The leakage inductances of the oxidation models are derived by the Ampere's law. Using the proposed oxidation models, the rotor bar and end ring faults in progress can be modeled and simulated with the motor current signature analysis (MCSA). In addition, the oxidation process of the rotor bar and end ring segment can motivate the rotor asymmetry, which is induced by electromagnetic imbalances, and it is one of the major motor faults. Results of simulations and experiments are compared to each other to verify the accuracy of the proposed models. Experiments are achieved using 3.7 kW, 3-phase, and squirrel cage induction motors with a motor drive inverter.
机译：提出了感应电动机中的转子条和端环段的氧化模型，以模拟感应电动机的行为，该感应电动机使用氧化的转子零件工作，这些零件被建模为正在进行的转子故障。由于氧化过程，转子部件的漏感和电阻与正常值不同。阻抗变化会修改通过氧化部分的电流密度和磁通量。因此，这会导致转子不对称，从而在故障电机的定子电流谱中引起异常谐波。氧化模型的漏感是根据安培定律得出的。使用提出的氧化模型，可以使用电动机电流特征分析（MCSA）对进行中的转子棒和端环故障进行建模和仿真。另外，转子条和端环段的氧化过程会引起由电磁失衡引起的转子不对称，这是主要的电动机故障之一。仿真结果和实验结果相互比较，以验证所提出模型的准确性。使用带有电机驱动逆变器的3.7 kW三相鼠笼式感应电动机完成了实验。

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