DocumentCode :
3209545
Title :
A New Robust Method To Detect Rotor Faults in Salient-Pole Synchronous Machines Using Structural Asymmetries
Author :
Neti, Prabhakar ; Dehkordi, A.B. ; Gole, A.M.
Author_Institution :
Electr. Machines & Drives Lab., Gen. Electr.-Global Res. Center, Niskayuna, NY
fYear :
2008
fDate :
5-9 Oct. 2008
Firstpage :
1
Lastpage :
8
Abstract :
This paper presents a novel method to detect rotor faults in salient-pole synchronous machines by exploiting small constructional asymmetries in the machine. In order to unambiguously detect the faults, it is very important to identify a signal that is minimally sensitive to the abnormal operating conditions of the machine but highly sensitive to the fault. This paper shows that certain frequency components such as the 30, 90 Hz in the stator current of a 4-pole 60 Hz salient-pole synchronous machine (SM) are good candidates for detecting rotor faults. The paper presents the physical explanation behind these observed frequency components and shows them to be suitable candidates to detect broken damper bars and inter-turn faults in the field winding.
Keywords :
fault diagnosis; rotors; synchronous machines; abnormal operating conditions; broken damper bars; field winding; inter-turn faults; rotor faults; salient-pole synchronous machines; stator current; structural asymmetries; Bars; Electric machines; Electrical fault detection; Fault detection; Fault diagnosis; Machine windings; Robustness; Samarium; Stator windings; Synchronous machines;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industry Applications Society Annual Meeting, 2008. IAS '08. IEEE
Conference_Location :
Edmonton, Alta.
ISSN :
0197-2618
Print_ISBN :
978-1-4244-2278-4
Electronic_ISBN :
0197-2618
Type :
conf
DOI :
10.1109/08IAS.2008.22
Filename :
4658810
Link To Document :
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