Bispectrum and Kurtosis Analysis of Rotor Currents for the Detection of Field Winding Faults in Synchronous Motors

In this work, the application of the bispectrum to rotor current signals is proposed to detect field winding faults in wound rotor synchronous motors. These signals are analyzed both under starting and under steady-state regimes. Furthermore, a new indicator based on bispectral kurtosis is proposed, yielding satisfactory results for fault classification. One of the interesting points of the paper ...