MOTOR DRIVE SYSTEM AND METHOD

A motor drive and method of controlling a motor are provided. The motor drive includes a controller generating a motor reference voltage; a DC bus providing a DC voltage having a ripple; an inverter including power switches operable to convert the DC voltage into an AC motor voltage by modulating th...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Perra, Andre P, Chedygov, Vladimir A, Leonard, Scott E, Paull, Dalton H, Trullinger, Thomas W
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING 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 HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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Beschreibung
Zusammenfassung:	A motor drive and method of controlling a motor are provided. The motor drive includes a controller generating a motor reference voltage; a DC bus providing a DC voltage having a ripple; an inverter including power switches operable to convert the DC voltage into an AC motor voltage by modulating the power switches during a plurality of switching cycles, the AC motor voltage based on the motor reference voltage; a capacitor circuit coupled to the DC bus and having a maximum capacitance that is less than 10 microfarads per ampere of a rated current; and voltage prediction logic structured to: detect a voltage value corresponding of the ripple during each of the plurality of switching cycles; and modify the motor reference voltage during each of the plurality of switching cycles using the voltage value.