Induction Motor Diagnostic System Based on Spectra Analysis of Current and Instantaneous Power Signals

In this paper, the theoretical basis and developed hardware and software for an induction motor diagnostic system based on electrical signals analysis is presented. The theoretical principles underlying these methods are based on a spectral analysis of the stator current and motor power consumption signals. The hardware allows data measuring for different operating modes with different range of motor loading. The software provides analysis of preliminary recorded or on-line collecting data using motor current signature analysis (MCSA) and instantaneous power spectra analysis (IPSA) methods. Experimental tests with real data analysis showed the possibility of utilization developed methods and equipment for induction motor diagnostic systems.