磁饱和对感应电动机保持架故障诊断信号的影响

2007 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives Pub Date : 2007-12-04 DOI:10.1109/DEMPED.2007.4393101

W. Maciołek, T. Sobczyk

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引用次数: 3

摘要

感应电动机转子保持架诊断基于(1-2s) o和(1+2s) o频率定子相电流中的附加分量。(1-2s)fo分量是笼形不对称的主要影响，而(1+2s)fo分量是次要影响。众所周知，它是由于转速波动引起的，这是由故障保持架电机中电磁转矩的交变分量产生的。本文表明，主磁路的磁饱和也会产生定子电流中的(1+2s)分量。用一个特殊的饱和数学模型来证明本文的结论。给出了惯性和饱和对(1+2s) o分量影响的定量分析结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Influence of Magnetic Saturation on Diagnostic Signal of Induction Motor Cage Faults

Induction motor rotor cage diagnostics bases on additional components in stator phase current with (1-2s)fo and (1+2s)fo frequencies. The (1-2s)fo component arises as the main effect of the cage asymmetry whereas the (1+2s)fo component is a secondary effect. It is commonly known, that it arises due to speed ripples, which are generated by alternating component of electromagnetic torque in a motor with faulty cage. This paper shows that magnetic saturation of a main magnetic circuit also generates the (1+2s)fo component in stator currents. A special mathematical model accounting for saturation is used to prove this thesis. Results of quantitative analysis of an influence of inertia and saturation on the (1+2s)fo component is shown.

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2007 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives

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