Detection of broken rotor bars in induction motors using wavelet analysis

Author

Douglas, H. ; Pillay, P. ; Ziarani, A.

Author_Institution

Dept. of Electr. Eng., Cape Town Univ., Rondebosch, South Africa

Volume

2

fYear

2003

Firstpage

923

Abstract

In this paper a new method for the detection of broken rotor bars in induction machines is introduced. The startup transient current of an induction machine is used as the medium for diagnoses. The fundamental component is extracted using an algorithm that predicts the instantaneous amplitude and frequency during startup. The residual current is then analyzed using wavelets and a comparison is made between a healthy and damaged machine. This method of machine condition monitoring is not load dependant and can be used for machines that are unloaded.

Keywords

condition monitoring; fault location; induction motors; rotors; starting; transient analysis; wavelet transforms; 0.5 hp; broken rotor bars detection; induction motors; instantaneous amplitude; instantaneous frequency; machine condition monitoring; residual current; startup; startup transient current; transient analysis; wavelet analysis; wavelets; Bars; Condition monitoring; Fault detection; Frequency; Induction machines; Induction motors; Rotors; Stators; Steady-state; Wavelet analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Machines and Drives Conference, 2003. IEMDC'03. IEEE International

Print_ISBN

0-7803-7817-2

Type

conf

DOI

10.1109/IEMDC.2003.1210345

Filename

1210345