| 摘要 |
Provided is a vector control device for a permanent magnet synchronous motor driven by an inverter. The vector control device includes: a current command generation unit (10) for generating a d-axis current command id* and q-axis current command iq* from a given torque command T*; and a current control unit (20) operating so that the motor current coincides with the current command. The current command generation unit includes: a d-axis basic current command generation unit (11) for generating a first d-axis basic current command id1* by using the torque command; a limiter unit (12) for inputting the current command id1* and outputting a value limited to below zero as a second d-axis basic current command id2*; a d-axis current command compensation unit (14) for outputting the current command id2* corrected in accordance with the d-axis current command compensation value dV as a d-axis current command id*; and a q-axis current command generation unit (15) for generating a q-axis current command iq* from the d-axis current command id*. It is possible to generate the d-axis current command id* and the q-axis current command iq* capable of realizing the maximum torque control by using a simple operation expression. |
