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Induction machines operated by inverter use to present efficiency decrease and sometimes present additional rotor and stator fault. FEM has been used for faulty motor simulation and shows results of motor fault effects. Experimental results corroborate the simulation and theoretical effects.
Motor current signature analysis has been successfully used in induction machines for fault diagnosis. The method however does not always achieve good results when the load torque is not constant. For proper results temporal analysis on determined frequency harmonics is needed. This paper proposes an automatic system for fault analysis based on wavelet functions, which allows on-line fault detection...
Motor current signature analysis has been successfully used in induction machines for fault diagnosis. The method however does not always achieve good results when the load torque is not constant. This paper proposes a new approach to motor fault detection, by analyzing the spectrogram and further combination of wavelet and power spectral density techniques. Theoretical development and experimental...
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