Surveillance et diagnostic des défauts rotoriques et mécaniques de la machine asynchrone avec alimentation équilibrée ou déséquilibrée

Abstract : The research presented in this thesis concerns the diagnosis of rotor and mechanical defaults of the induction machine. First, there is provided a summary of the diagnostic methods supported by experiments with defects created in the rotor and stator of the asynchronous machine fed from the network. And in the same vein, an experimental study on the comparison in amplitude and phase signatures of defects in bar in the spectra between the stator current and neutral voltage was discussed. In a second step, the induction motor is fed by a converter mounted directly onto the motor. We introduced a new diagnostic technique based on spectral analysis of the currents of the network (upstream of the converter-machine). Finally, in order to simulate the behavior of the machine, it was necessary to develop an accurate model taking into account the space harmonics, and neutral voltage. To corroborate the frequency induced by rotor defects in the neutral voltage, a theoretical study was presented which gave interesting results
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Mohamed El Kamel Oumaamar. Surveillance et diagnostic des défauts rotoriques et mécaniques de la machine asynchrone avec alimentation équilibrée ou déséquilibrée. Autre. Université de Lorraine, 2012. Français. ⟨NNT : 2012LORR0022⟩. ⟨tel-01749160⟩

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