DocumentCode :
3233742
Title :
Rotor fault detection of electrical machines by low frequency magnetic stray field analysis
Author :
Chadebec, Olivier ; Bui, Viet Phuong ; Granjon, Pierre ; Rouve, Laure-Line ; Le Bihan, Nicolas ; Coulomb, Jean-Louis
Author_Institution :
ENSIEG, INPG/UJF-CNRS, Grenoble
fYear :
2005
fDate :
7-9 Sept. 2005
Firstpage :
1
Lastpage :
6
Abstract :
This paper shows the reliability of fault detection on electrical machines by analysis of the low frequency magnetic stray field. It is based on our own experience about magnetic discretion of naval electrical propulsion machine. We try to apply the techniques developed in previous works on the subject to faults detection. In this paper we focus on rotor defaults in a synchronous generator (eccentricity and short-circuit in rotor). Two kinds of study are performed. The first one is numerical. Firstly, an adapted finite elements method is used to compute the stray field around the device. However, this approach is difficult to apply to fault detection and not well-adapted. A new model, simpler and faster, is developed. Results are compared for both modelling. The second one is experimental and is driven thanks to a laboratory machine representative of a real high power generator and to fluxgate magnetometers located around the device. Both studies show good agreement and demonstrate the reliability of the approach.
Keywords :
fault diagnosis; finite element analysis; magnetometers; rotors; synchronous generators; electrical machines; finite elements method; fluxgate magnetometers; high power generator; laboratory machine representative; low frequency magnetic stray field analysis; magnetic discretion; naval electrical propulsion machine; rotor defaults; rotor fault detection; synchronous generator; Electrical fault detection; Fault detection; Finite element methods; Frequency; Laboratories; Magnetic analysis; Power generation; Propulsion; Rotors; Synchronous generators;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Diagnostics for Electric Machines, Power Electronics and Drives, 2005. SDEMPED 2005. 5th IEEE International Symposium on
Conference_Location :
Vienna
Print_ISBN :
978-0-7803-9124-6
Electronic_ISBN :
978-0-7803-9125-3
Type :
conf
DOI :
10.1109/DEMPED.2005.4662541
Filename :
4662541
Link To Document :
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