To limit d-axis current to an arbitrary value while avoiding duty saturation of a motor. A motor control device including: a voltage command value calculation unit (45, 46) configured to calculate a voltage command value of voltage applied to a motor (20), based on a q-axis current command value and a d-axis current command value; a driving circuit (48) configured to output driving power to the motor (20), based on the voltage command value; a d-axis current command value calculation unit (73) configured to calculate the d-axis current command value limiting the voltage command value to a maximum voltage applicable to the driving circuit or less by field-weakening control; a d-axis current command value limitation unit (74) configured to limit the d-axis current command value calculated by the d-axis current command value calculation unit (73); and a q-axis current command value limitation unit (75) configured to limit the q-axis current command value lest the voltage command value exceed the maximum voltage due to limitation of the d-axis current command value by the d-axis current command value limitation unit (74).
MOTOR CONTROL DEVICE, ELECTRIC ACTUATOR PRODUCT AND ELECTRIC POWER STEERING DEVICE
MOTORSTEUERUNGSVORRICHTUNG, ELEKTRISCH ANGETRIEBENES AKTUATORPRODUKT UND ELEKTRISCH ANGETRIEBENE SERVOLENKVORRICHTUNG
DISPOSITIF DE COMMANDE DE MOTEUR, PRODUIT D'ACTIONNEUR ÉLECTRIQUE ET DISPOSITIF DE DIRECTION ASSISTÉE ÉLECTRIQUE
2021-08-25
Patent
Electronic Resource
English
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