Title :
Rotor fault detection using the instantaneous power signature
Author :
Didier, G. ; Ternisien, E. ; Caspary, O. ; Razik, H. ; Henao, H. ; Yazidi, A. ; Capolino, G.A.
Author_Institution :
Groupe de Recherche en Electrotechnique et Electron. de Nancy, Univ. Henri Poincare, Vandoeuvre-les-Nancy, France
Abstract :
The aim of this paper is to present a method to detect broken rotor bar faults by estimating a global modulation index which corresponds to the contribution of all detected modulating frequencies in the stator current. We show that additional information carried by instantaneous power improves the detection of the sidebands and consequently the monitoring too. In fact, the instantaneous power method can be interpreted as a modulation operation in the time domain that translates the spectral components specific to the broken rotor bars to the band [0-50]Hz.
Keywords :
asynchronous machines; condition monitoring; electric machine analysis computing; fault location; rotors; signal processing equipment; 0 to 50 Hz; global modulation index; instantaneous power; instantaneous power signature; modulation operation; rotor bar faults; rotor fault detection; Bars; Condition monitoring; Costs; Fault detection; Frequency estimation; Induction generators; Induction machines; Stators; Voltage; Wind energy generation;
Conference_Titel :
Industrial Technology, 2004. IEEE ICIT '04. 2004 IEEE International Conference on
Print_ISBN :
0-7803-8662-0
DOI :
10.1109/ICIT.2004.1490277
