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Analytical approach of the stator current frequency harmonics computation for detection of induction machine rotor faults

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3 Author(s)
Henao, H. ; Dept. of Electr. Eng., Univ. of Picardie "Jules Verne", Amiens, France ; Razik, H. ; Capolino, G.-A.

The aim of this paper is to analyze theoretically and experimentally the stator current of a three-phase squirrel-cage induction machine in order to show how it is influenced by electrical rotor faults. The approach used for this study analyzes the modification introduced by n broken rotor bars in the rotor cage magnetomotive force and then estimates the resulting frequency spectrum in the stator current. This approach is validated in a 3-kW 230-V/400-V 50-Hz 2850-r/min two-pole three-phase induction machine, showing the sensitive frequency components to rotor fault condition.

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Industry Applications, IEEE Transactions on  (Volume:41 ,  Issue: 3 )