Title :
Internal Short Circuit Fault Diagnosis for PM Machines Using FE-based Phase Variable Model and Wavelet Analysis
Author :
Mohammed, O.A. ; Liu, S. ; Liu, Z.
Author_Institution :
Dept. of Electr. Eng., Florida Int. Univ., Miami, FL
Abstract :
This paper presents a simulation method for studying the fault diagnosis of electric machines. The internal short circuit fault of PM machines is used as an example. A FE-based phase variable model is proposed to describe the PM machines with internal short circuit faults. The FE-based model is built using the solutions obtained from the FE modeling of the machine with the same fault. Such a model has two features. It includes the precise information of faults. Also, it allows a fast system simulation, which is desirable by diagnosing the fault of machines connected to a control circuit. Wavelet transform is used to perform machine current/voltage signature analysis. The obtained results show the practicality of the proposed diagnosis method
Keywords :
fault diagnosis; finite element analysis; permanent magnet machines; short-circuit currents; wavelet transforms; FE-based phase variable model; PM machines; control circuit; electric machines; internal short circuit fault diagnosis; machine current-voltage signature analysis; wavelet analysis; wavelet transform; Circuit analysis; Circuit faults; Coupling circuits; Equations; Fault diagnosis; Inductance; Magnetic analysis; Signal analysis; Voltage; Wavelet analysis;
Conference_Titel :
Electromagnetic Field Computation, 2006 12th Biennial IEEE Conference on
Conference_Location :
Miami, FL
Print_ISBN :
1-4244-0320-0
DOI :
10.1109/CEFC-06.2006.1632949
