Modeling and Diagnosis of Stator Winding Faults in PMSM using Motor Current Signature Analysis

Inter-Turn Short Circuit (ITSC) faults in stator winding of Permanent Magnet Synchronous Motors (PMSMs) is one of the major cause of motor failure. This paper deals with the diagnosis of ITSC faults in PMSM tacking into account of all space harmonics. To do this, it's necessary to build a mathematical model of the machine object of the diagnosis. This model must be reliable and able to describe the behavior of the machine in deferent operation modes. Winding Function Approach (WFA) is among the most significant modeling methods because it takes into account the real distribution of the windings in the stator slots. To highlight the interest of the model employed and the efficiency of the spectral analysis technique, a series of simulations are performed in both cases of operation: healthy and in the presence of ITSC faults.