METHOD OF MONITORING AN ELECTROMECHANICAL DRIVE DEVICE Russian patent published in 2020 - IPC G01R31/34 

FIELD: electrical engineering.

SUBSTANCE: invention relates to a method of monitoring an electromechanical drive type device comprising a three-phase electric motor. Method of monitoring includes stages, at which three-phase currents are measured, which supply three-phase electric motor, measured three-phase currents are projected in Park coordinates system. Method (30) of multiple empirical mode decomposition associated with method (40) of blind separation of source to obtain source components (IC1, IC10) is used for current on quadrature axis (I_q). First set of source components (IC1, ..., IC9), which are sensitive to the first fault, and the second set of source components (IC9), which are sensitive to the second fault, are automatically selected. First virtual fault signal and second virtual fault signal are generated (60). First set of signatures characterizing first fault are selected (70) from first virtual fault signal, and second set of signatures characterizing second fault are selected from second virtual fault signal.

EFFECT: improved detection and evaluation of seriousness of faults due to improved sensitivity of signatures to faults.

12 cl, 6 dwg