Diagnosis of induction machine rotor defects from an approach of magnetically coupled multiple circuits

The authors develop the squirrel cage induction machine models for the diagnosis of defects from an approach of magnetically coupled multiple circuits. The generalized models are established on the base of mathematical recurrences. The calculation of machine inductances (with and without rotor defects) is carried out by the tools of software MATLAB before the beginning of simulation under software SIMULINK. The experimental tests were carried out on four induction machines of power 4 kW, especially manufactured for the needs for the diagnosis and presenting defects in the rotor. The simulated results and the experimental ones are presented to confirm the validity of proposed models