Advanced Induction Motor Rotor Fault Diagnosis Via Continuous and Discrete Time–Frequency Tools
Advanced Induction Motor Rotor Fault Diagnosis Via Continuous and Discrete Time–Frequency Tools
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DOI：
10.1109/tie.2014.2355816
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发表时间：
2015-03
影响因子：
7.7
通讯作者：
J. Pons-Llinares;J. Antonino-Daviu;M. Riera-Guasp;Sang Bin Lee;Tae-June Kang;C. Yang
中科院分区：
文献类型：
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作者：
J. Pons-Llinares;J. Antonino-Daviu;M. Riera-Guasp;Sang Bin Lee;Tae-June Kang;C. Yang
近年来，基于暂态的异步电动机故障诊断越来越受到人们的关注。这是由于它能够避免在某些工业情况下（负载转矩振荡、轻负载条件等）对传统电机电流特征分析的最终错误诊断。然而，这些暂态方法的应用需要使用先进的信号处理工具。本文详细比较了在暂态分析中使用的两组主要变换：离散变换和连续变换。本文不关注琐碎的故障案例，而是关注应用常规方法往往导致误诊断的困难实际情况（双保持架电机外棒断裂、转子轴向风道影响电机、组合故障）。事实上，这是第一次将连续工具应用于这些有争议的情况。本文的研究结果证明了连续变换的特殊优点，打破了一些关于连续变换使用的错误神话。
Transient-based fault diagnosis in induction motors has gained increasing attention over the recent years. This is due to its ability to avoid eventual wrong diagnostics of the conventional motor current signature analysis in certain industrial situations (presence of load toque oscillations, light loading conditions, and so on). However, the application of these transient methodologies requires the use of advanced signal processing tools. This paper presents a detailed comparison between the two main groups of transforms that are employed in transient analysis: discrete and continuous. This paper does not focus on trivial fault cases but on difficult real situations where the application of the conventional methods often leads to false diagnostics (outer bar breakages in double-cage motors, motors with rotor axial duct influence, and combined faults). Indeed, it is the first time that continuous tools are applied to some of these controversial situations. The results in this paper prove the special advantages of the continuous transforms, tearing down some false myths about their use.