Imbalanced Diagnosis Scheme for Incipient Rotor Faults in Inverter-Fed Induction Motors

被引:0
|
作者
Martin-Diaz, Ignacio [1 ]
Garcia-Calva, Tomas [2 ]
Duque-Perez, Oscar [1 ]
Morinigo-Sotelo, Daniel [1 ]
机构
[1] Univ Valladolid, Inst Adv Prod Technol, Res Grp ADIRE, Valladolid 47002, Spain
[2] Univ Valladolid, Dept Elect Engn, Valladolid 47002, Spain
来源
APPLIED SCIENCES-BASEL | 2024年 / 14卷 / 16期
关键词
rotor faults; diagnosis features; induction motor; inverter; small data; imbalance correction; SMOTE;
D O I
10.3390/app14167237
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Recently, fault diagnosing supervised classifiers have been widely proposed to diagnose both electric and mechanical faults in induction motors (IM). However, many of them require a large amount of data, which implies a great effort required for processing fault-related features and building the training set. Furthermore, in real-world datasets, it is required to deal with highly skewed data distributions, also known as class imbalance, which is a limiting issue and can misguide the tuning of machine learning algorithms. Resampling techniques based on a synthetic generation of minority class observations aim to address this problem. Last but not least is the fact that inverter-fed IM introduces undesired harmonics in the monitoring signal altering the diagnosis patterns. This diagnosis scheme is evaluated on experimental imbalanced data oriented to deal with the diagnosis of a rotor in situations where it is fed with an inverter. The results show how this imbalanced approach determines the actual diagnosis performance on a small amount of data. The experimental results demonstrate that balanced training sets built with class balancing techniques improve the classifier and therefore its performance for diagnosing incipient rotor faults in inverter-fed IM with studied and interpretable features recently proposed in this field of study.
引用
收藏
页数:15
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