MOTOR CONTROL DEVICE, AND MOTOR CONTROL METHOD

A control device (40) calculates a voltage command value for an inverter (52) by executing feedback control that causes a current value of a three-phase motor (21) to follow a current command value for the motor (21). The control device (40) includes a compensation calculator (81) that calculates, u...

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Bibliographische Detailangaben
Hauptverfasser:	SEI, Kota, NATSUME, Yusuke, YAMAGUCHI, Shigetoshi
Format:	Patent
Sprache:	eng ; fre ; ger
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 LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS MOTOR VEHICLES PERFORMING OPERATIONS TRAILERS TRANSPORTING
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Beschreibung
Zusammenfassung:	A control device (40) calculates a voltage command value for an inverter (52) by executing feedback control that causes a current value of a three-phase motor (21) to follow a current command value for the motor (21). The control device (40) includes a compensation calculator (81) that calculates, using a rotation angle of the motor (21), a correction voltage added to the voltage command value to compensate for torque ripple of the motor (21). The correction voltage is a sine wave that is in antiphase with the torque ripple, and is obtained by adding together a real part that is a cosine wave component and an imaginary part that is a sine wave component. The cosine wave component and the sine wave component have the same frequency. The compensation calculator (81) is configured to calculate an amplitude of the cosine wave component and an amplitude of the sine wave component from the current command value and a rotation speed of the motor (21).