Resumen
Method of estimation of fault resistance in the event of earth faults in rotor windings of synchronous machines. The present invention allows the estimation of the fault resistance against earth faults in rotor windings of synchronous machines fed by rectifiers connected to a transformer. The method has the advantage of being able to know the magnitude of the problem that affects the machine, since the higher the fault resistance, the lower the fault current will be. The estimation is based mainly on the analysis of the harmonic components of the voltage in the earthing resistance. (Machine-translation by Google Translate, not legally binding)