[Problem]An object of the present invention is to provide a vector control type motor control unit that compensates a dead time of an inverter without a tuning operation, improves a distortion of a current waveform and responsibility of the current control, and suppresses sound, vibration and a torque ripple.[Means for solving the problem]The present invention is the vector control type motor control unit that calculates a q-axis control assist command value, calculates dq-axes current command values from the control assist command value, converts the dq-axes current command values into 3-phase duty command values, and drives and controls a 3-phase brushless motor by a PWM-controlled inverter, wherein dead time compensation of the inverter is performed by calculating 3-phase dead time reference compensation values based on a motor rotational angle, calculating 3-phase dead time compensation values by temperature-correcting the 3-phase dead time reference compensation values, and adding the 3-phase dead time compensation values to 3-phase voltage command values after performing dq-axes space vector modulation.
MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING DEVICE EQUIPPED WITH SAME
MOTORSTEUERUNGSVORRICHTUNG UND DAMIT AUSGESTATTETE ELEKTRISCHE SERVOLENKVORRICHTUNG
DISPOSITIF DE COMMANDE DE MOTEUR ET DISPOSITIF DE DIRECTION ASSISTÉE ÉLECTRIQUE LE COMPORTANT
2020-04-22
Patent
Electronic Resource
English
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