| 摘要 |
<p>This invention provides a motor drive device capable of sufficiently suppressing the occurrence of torque ripple and abnormal noise even if the motor rotates at high speed. A 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 calculating portion (21) for calculating a current command value, a rotation calculating portion (22) for calculating a rotation angle ¸ and an angular speed É of a motor (150), a current command value correcting portion (24) for correcting the current command value based on the rotation angle ¸, a voltage command value calculating portion (25) for calculating a voltage command value based on the current command value corrected by the current command value correcting portion (24), a voltage command value correcting portion (26) for correcting the voltage command value calculated by the voltage command value calculating portion (25) based on the current command value calculated by the current command value calculating portion (21) and the rotation angle ¸ and the angular speed É, and a drive signal generating portion (27) for generating a PWM signal based on the voltage command value corrected by the voltage command value correcting portion (26).</p> |
