Experimental investigation on detection of air gap eccentricity in induction motors by current and vibration signature analysis using non-invasive sensors

The contents of this paper reports an experimental investigation carried out to detect the air gap eccentricity faults under varying load conditions using non-invasive transducers to monitor the current and vibration signals as a diagnostic medium. Experimental results of vibration signature analysi...

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Bibliographic Details
Published in:Energy procedia 2012, Vol.14, p.1047-1052
Main Authors: Hegde, Vishwanath, Maruthi, G.S.
Format: Article
Language:English
Subjects:
Air gap eccentricity
Fast Fourier transform
Hall Effect current transducer
MEMS accelerometer
three phase induction motor
Vibration signature
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Summary:The contents of this paper reports an experimental investigation carried out to detect the air gap eccentricity faults under varying load conditions using non-invasive transducers to monitor the current and vibration signals as a diagnostic medium. Experimental results of vibration signature analysis using Micro-Electro-Mechanical Systems (MEMS) accelerometer and Motor Current Signature Analysis (MCSA) using Hall Effect current transducers are compared and found nearly common signatures. Spectral analysis is carried out using decimation in time Fast Fourier Transform algorithm using FFT analyzer. This study also examines the usefulness of vibration signature analysis using MEMS to detect the eccentricity faults in developing a compact, miniaturized and cost effective instrument.
ISSN:1876-6102
1876-6102
DOI:10.1016/j.egypro.2011.12.1053