In this work, it is proposed a comparative evaluation between two protection schemes for synchronous generators against loss of excitation, based on the R-X impedance plane and P-Q power plane. For this, system modeled in EMTP-RV software was used to simulate cases total partial field loss, with different pre-disturbance load conditions generator, considering operation parallel. The results sho...

The over-voltage phenomenon is usually described using the traveling wave and reflection phenomena in variable speed drive system. A voltage pulse, initiated at the inverter, being reflected at the motor terminals due to a mismatch between the surge impedance of the motor and the cable. In this paper, resistance, inductance and capacitance of the cable and the motor windings are obtained experi...