Vibration and stator current spectral analysis of induction machine operating under dynamic eccentricity

This paper deals with the squirrel-cage induction machine´s rotor fault diagnostics - dynamic eccentricity concretely - in nominal steady state. The particular fault diagnostic is carried out with both vibration and stator current frequency spectra analyses. Besides the machine with faulty rotor the same analyses on the machine with a healthy one are performed as a reference point. The comparison of both diagnostic methods is discussed.