Detection of broken rotor bars fault in squirrel cage induction motors using continuous wavelet transform

Authors

Faculty of Engineering, Shahed University, Tehran, Iran

Abstract

Induction motors have numerous applications in various industries. In order to avoid industrial processes failures, fast and timely fault detection of motors is essential. In this paper, a novel method is presented for on-line detection of broken rotor bars which is a common rotor faults in induction motors. The method is based on the stator current analysis and signal processing using continuous wavelet transform (CWT). The most advantage of the method is that it detects the broken rotor bars in normal operations and at different loading conditions. In this method, the stator current signal should first be analyzed in the healthy and faulty conditions and then the broken bar can be diagnosed using a proposed index. Finite element method (FEM) is applied to simulate the motor under healthy and faulty conditions.

Keywords

References

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TABRIZ JOURNAL OF ELECTRICAL ENGINEERING
Volume 48, Issue 4 - Serial Number 86
February 2018
Pages 1653-1662

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