Detection of Faults in PMSM using Field Reconstruction Method and Mechanical Impulse Response

A novel approach for quick evaluation of the electromagnetically induced vibration in a Permanent Magnet Synchronous Machine (PMSM) is introduced. Field Reconstruction Method (FRM) and Mechanical Impulse Response (MIR) are used for this purpose. The electromagnetic forces and vibration emissions are analyzed in time and frequency domain for healthy and faulty cases. These analyses allow for detecting specific properties of forces and vibration which are later on used for identifying various fault conditions. The proposed concept has been experimentally verified. Comparison of the vibration emissions for different operating conditions under various types of faults are presented as well.