| 摘要 |
The invention provides a motor drive device (100) capable of suppressing generation of torque ripple and abnormal noise even if a motor (150) rotates at high speed. The motor drive device (100) comprises an inverter (1), and a control section (2) for controlling the inverter (1). The control section (2) comprises a current command value calculation unit (21) for calculating a current command value, a rotation calculation unit (22) for calculating a rotation angle ¸ and an angular speed É of the motor (150), a drive signal generation unit (24) for generating a PWM signal, a correction signal generation unit (25) for generating a correction signal for correcting the PWM signal to compensate for the dead time of the inverter, and an application current setting unit (27) for adding a dead time to the PWM signal corrected by the correction signal and outputting the resulting signal to the inverter (1). The correction signal generation unit (25) generates the correction signal based on the current command value and the rotation angle ¸ and the angular speed É calculated by the rotation calculation unit (22).
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