Motor control device

In a motor control device, a voltage phase detecting unit sets a voltage phase of applied voltage to be applied to a motor based on a deviation between a target d-axis current set by a target d-axis current setting unit and an actual d-axis current detected by a rotor position detecting unit and an...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Hirono, Daisuke, Hotta, Masafumi
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS 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 HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING WEAPONS
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Beschreibung
Zusammenfassung:	In a motor control device, a voltage phase detecting unit sets a voltage phase of applied voltage to be applied to a motor based on a deviation between a target d-axis current set by a target d-axis current setting unit and an actual d-axis current detected by a rotor position detecting unit and an actual rotational speed detected by a rotational speed detecting unit. Here, a correction amount calculating unit determines whether or not a rotor has rotated by one period of mechanical angle based on the rotor position detected by the rotor position detecting unit and calculates an average value of deviations between target d-axis current and actual d-axis current in each period of mechanical angle as a correction amount, and a second addition/subtraction unit corrects a target d-axis current by a correction amount.