Open AccessApplication of intelligent tools to detect and classify broken rotor bars in three‐phase induction motors fed by an inverter
Author(s) -
Godoy Wagner Fontes,
Silva Ivan Nunes,
Goedtel Alessandro,
Palácios Rodrigo Henrique Cunha,
Lopes Tiago Drummond
Publication year - 2016
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
ISSN - 1751-8679
DOI - 10.1049/iet-epa.2015.0469
Subject(s) - induction motor , stator , downtime , artificial neural network , engineering , robustness (evolution) , multilayer perceptron , control engineering , control theory (sociology) , support vector machine , rotor (electric) , inverter , computer science , artificial intelligence , voltage , reliability engineering , control (management) , mechanical engineering , biochemistry , chemistry , electrical engineering , gene
A comprehensive study of intelligent tools used to classify broken rotor bars in induction motors, which operate with three different types of frequency inverters, is presented. The diagnosis of defective rotor bars is a critical issue for the predictive maintenance of induction motors. A proper classification of these defects in their early stages of evolution is necessary for preventing major machine failures and production downtime. The proposed approach is performed by analysing the amplitude of the stator current signal in the time domain, using a dynamic acquisition rate based on machine frequency supply. To assess classification accuracy under the various severity levels of the faults, the performance of four different learning machine techniques is investigated: (i) fuzzy ARTMAP network; (ii) support vector machine (sequential minimal optimisation); (iii) k ‐nearest neighbour; and (iv) multilayer perceptron network. Results obtained from 1274 experimental tests are presented in order to validate the study, which considers a wide range of load conditions and operating frequencies. Experimental results presented in this study validate the robustness and efficacy of the proposed approach.