METHOD AND SYSTEM FOR THE DETECTION AND DIAGNOSIS OF FAULTS IN ELECTRIC MACHINES WHEN IN OPERATION

摘要

The present invention discloses a method for the detection and diagnosis of faults in electric machines when in operation. The method comprises: i) simultaneously acquiring a current signal and a voltage signal associated with the winding of the electric machine; ii) defining a set of vectors whose components are DC and/or AC values ​​at different levels of separation and amplification of the current and voltage signals; iii) simultaneously acquiring a current signal and a voltage signal associated with an emulated fault; iv) defining a set of vectors whose components are DC and/or AC values ​​at different levels of separation and amplification of the current and voltage signals associated with an emulated fault; v) identifying variations in the components of the vectors; vi) comparing vectors having variations in their components with respect to the emulated fault vectors; vii) analysing the variations and comparisons in order to detect whether 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 further discloses a system for carrying out the method, comprising: i) a module for obtaining the current and voltage signals associated with the winding of the electric machine; ii) a fault emulation module; iii) a module for sensitizing signals by separating DC and/or AC levels and amplifying the resulting signal; iv) a memory unit for storing data relating to the DC and/or AC values; and v) a module for processing, analysis and reporting the status of the machine.