AN APPARATUS TO PERFORM ONLINE AND OFFLINE DIAGNOSTIC AND MONITORING OF INDUCTION MOTORS

An apparatus to perform online and offline diagnostic and monitoring of induction motors, configured to carry out a method including the steps of measuring motor stator three-phase currents, transforming three-phase current data, Ia, lb, le into two dimensional d-q current data, Id and lq, the two d...

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Bibliographische Detailangaben
Hauptverfasser:	MUHAMMAD IRFAN, ROSDIAZLI BIN IBRAHIM, VIJANTH SAGAYAN ASIRVADAM, NORDIN BIN SAAD
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
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Beschreibung
Zusammenfassung:	An apparatus to perform online and offline diagnostic and monitoring of induction motors, configured to carry out a method including the steps of measuring motor stator three-phase currents, transforming three-phase current data, Ia, lb, le into two dimensional d-q current data, Id and lq, the two dimensional d-q current data, Id and lq being displayed as graphical representations, classifying the graphical representations into fault types and severity, characterized in that, three phase current data is transformed into two dimensional d-q current data using a modified Park's transformation equation, which covers one or more broadband fault frequencies produced by a continuous vibration of one or more distributed defects, such that defects of bearings can be categorized into distributed as well as localized defects of bearings in inner race and/or outer race of induction motors. Figure 6