Stator-winding fault diagnosis of PM brushless DC motor drives

Author

Awadallah, M.A. ; Morcos, M.M.

Author_Institution

Dept. of Electr. & Comput. Eng., Kansas State Univ., Manhattan, KS, USA

fYear

2002

fDate

2002

Firstpage

147

Lastpage

152

Abstract

A model-based diagnostic system for stator winding inter-turn faults of PM brushless DC motor drives is presented. A transient model of the drive system is set up and run under different healthy and faulty conditions. The steady-state supply current is selected as the diagnostic signal to compare the healthy operation to the faulty operation under different loads. The supply current signal is transformed to the frequency domain using the discrete Fourier transform (DFT). Appropriate diagnostic indices are extracted from the supply current spectrum to differentiate between healthy and different faulty conditions.

Keywords

DC motor drives; brushless DC motors; discrete Fourier transforms; electrical faults; fault diagnosis; machine theory; permanent magnet motors; stators; PM brushless DC motor drives; diagnostic indices; discrete Fourier transform; faulty conditions; frequency domain; healthy conditions; model-based diagnostic system; stator winding inter-turn faults; stator-winding fault diagnosis; steady-state supply current; supply current spectrum; transient model; Brushless DC motors; Circuit faults; Current supplies; DC motors; Discrete Fourier transforms; Fault diagnosis; Frequency domain analysis; Signal processing; Stators; Steady-state;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering 2002 Large Engineering Systems Conference on, LESCOPE 02

Print_ISBN

0-7803-7520-3

Type

conf

DOI

10.1109/LESCPE.2002.1020681

Filename

1020681