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Title: Hybrid time-frequency domain analysis for inverter-fed induction motor fault detection
Authors: Chua, T.W.
Tan, W.W. 
Wang, Z.-X. 
Chang, C.S. 
Keywords: Hybrid time-frequency method
Inverter-driven induction motor
Real-time fault diagnosis
Robust algorithm
Issue Date: 2010
Citation: Chua, T.W.,Tan, W.W.,Wang, Z.-X.,Chang, C.S. (2010). Hybrid time-frequency domain analysis for inverter-fed induction motor fault detection. IEEE International Symposium on Industrial Electronics : 1633-1638. ScholarBank@NUS Repository.
Abstract: The detection of faults in an induction motor is important as a part of preventive maintenance. Stator current is one of the most popular signals used for utility-supplied induction motor fault detection as a current sensor can be installed nonintrusively. In variable speeds operation, the use of an inverter to drive the induction motor introduces noise into the stator current so stator current based fault detection techniques become less reliable. This paper presents a hybrid algorithm, which combines time and frequency domain analysis, for broken rotor bar and bearing fault detection. Cluster information obtained by using Independent Component Analysis (ICA) to extract features from time domain current signals is combined with information extracted from fast Fourier transformed signal to reveal any underlying faults. To minimise the effect of the noise in the raw signal and intra-class variance in the extracted feature, a novel noise reduction approach-Ensemble and Individual Noise Reduction is employed. An advantage of the proposed scheme is that time domain analysis module can provide an early fault detection with minimal computation complexity. Experimental results obtained on the three-phase inverter-fed squirrel-cage induction motors demonstrated that the proposed method provides excellent classification results. © 2010 IEEE.
Source Title: IEEE International Symposium on Industrial Electronics
ISBN: 9781424463916
DOI: 10.1109/ISIE.2010.5637554
Appears in Collections:Staff Publications

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