Patent ID: 10031184

Abstract:
The present invention discloses a method for the detection and diagnosis of faults in running electric machines. The method consists of: i) simultaneously obtaining a current signal and a voltage signal associated with the rotor winding of the electric machine; ii) defining a group of vectors whose components are DC and/or AC values at different separation and amplification levels of the current and voltage signals; iii) simultaneously obtaining a current signal and a voltage signal associated with an emulated fault; iv) defining a group of vectors whose components are DC and/or AC values at different separation and amplification levels of the current and voltage signals associated with an emulated fault; v) determining the variations in the components of the vectors; vi) comparing the vectors that show component variations with the emulated fault vectors; vii) analyzing the variations and comparisons in order to detect whether or not there is at least one type of fault; and viii) reporting the presence or absence of at least one type of fault in the electric machine.The present invention also discloses a system to carry out this method, consisting of: i) a unit that obtains the current and voltage signals associated with the winding of the electric machine; ii) a unit that emulates faults; iii) a unit that sensitizes the signals by separating the DC and/or AC levels and amplifies the resulting signal; iv) a memory unit that stores the DC and/or AC values; and v) a unit that processes, analyzes and reports on the status of the machine.