| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotary electric machine control device capable of suppressing sound and vibration.SOLUTION: In a rotary electric machine control device, a q-axis saturation guard operation part 47 uses a preceding q-axis voltage command value Vqas a q-axis voltage command value Vqon condition that the absolute value of a before-limitation q-axis voltage command value FBq is larger than at least the absolute value of a second saturation guard value Vq_max_L, and the absolute value of the preceding q-axis voltage command value Vqis from the absolute value of the second q-axis saturation guard value Vq_max_L to the absolute value of a first q-axis saturation guard value Vq_max_H, provided that of values defining a dead zone width &Dgr;V involved with the restriction of the before-limitation q-axis voltage command value FBq, the value larger in absolute value is the first q-axis saturation guard value Vq_max_H, and the value smaller in absolute value is the second q-axis saturation guard value Vq_max_L. Thus, the fluctuation of the q-axis voltage command value Vqis suppressed even if a d-axis voltage command value Vdfluctuates and therefore, sound and vibration accompanying the fluctuation in torque can be reduced.SELECTED DRAWING: Figure 1 |
