Title :
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
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;
Conference_Titel :
Electric Machines and Drives Conference, 2003. IEMDC'03. IEEE International
Print_ISBN :
0-7803-7817-2
DOI :
10.1109/IEMDC.2003.1210345
