Diagnosis of Induction Motors Under Varying Speed Operation by Principal Slot Harmonic Tracking


Type
Article
Change log
Authors
Climente-Alarcon, V 
Antonino-Daviu, JA 
Haavisto, A 
Arkkio, A 
Abstract

© 1972-2012 IEEE. A detailed study on the energy content of a principal slot harmonic (PSH) in an induction motor operating at variable slip is carried out. The machine is tested under different faulty conditions, namely, broken rotor bar, mixed eccentricity, and interturn short circuit. The use of a combined time-frequency analysis and particle filtering feature extraction procedure allows tracking the evolution of a PSH under different load profiles and integrating its energy. The proposed fault indicator provides values that are equivalent with the traditional one for stationary operation even in the case of pulsating load. The results show that the energy in the PSH reflects the overall state of the machine under these conditions. Furthermore, procedures to discern the different faults in real applications are proposed.

Description
Keywords
Fault diagnosis, induction motors, principal slot harmonic (PSH), time-frequency analysis, variable load, Wigner-Ville distribution (WVD)
Journal Title
IEEE Transactions on Industry Applications
Conference Name
Journal ISSN
0093-9994
1939-9367
Volume Title
51
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Rights
All rights reserved