System and method of protection from internal faults in induction machines of rolled rotor (Machine-translation by Google Translate, not legally binding)

System and method of protection against internal faults in winding rotor induction machines. The present invention can detect internal faults in systems, whether the short circuit occurs in the stator or in the rotor of a winding rotor induction machine (2). The differential current wave calculated...

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Bibliographische Detailangaben
Hauptverfasser: MUNOZ GARCIA, Angel, DE CASTRO FERNANDEZ, Rosa María, PLATERO GAONA, Carlos Antonio, REDONDO CUEVAS, Marta
Format: Patent
Sprache:eng ; spa
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Zusammenfassung:System and method of protection against internal faults in winding rotor induction machines. The present invention can detect internal faults in systems, whether the short circuit occurs in the stator or in the rotor of a winding rotor induction machine (2). The differential current wave calculated as a result of the comparison of the currents measured in the stator (9) and in the rotor (10), after the application of different correction factors (11) and the transformed one, is used as an indicator of the defects. Of park (12) and (13). The amplitude of said differential current, allows to distinguish between internal defects to the machine and external to it. (Machine-translation by Google Translate, not legally binding) Sistema y método de protección ante faltas internas en máquinas de inducción de rotor bobinado. La presente invención puede detectar faltas internas en sistemas, tanto si el cortocircuito se produce en el estátor como en el rotor de una máquina de inducción de rotor bobinado (2). Se utiliza como indicador de los defectos, la onda de corriente diferencial calculada como resultado de la comparación de las corrientes medidas en el estátor (9) y en el rotor (10), tras la aplicación de diferentes factores correctores (11) y la transformada de Park (12) y (13). La amplitud de dicha corriente diferencial, permite distinguir entre defectos internos a la máquina y externos a la misma.