| 摘要 |
A DC voltage is controlled in accordance with a variation of a power source voltage, without the need to detect an effective value of the power source voltage. A PI control section (702) performs a PI control on a deviation (”Vdc) which is a difference between a DC voltage command (Vdc*) and a DC voltage command (Vdc), and outputs a d-axis current command value (Id*). A PI control section (704) performs a PI control on a deviation (”Id) which is a difference between the d-axis current command value (Id*) and a d-axis current (Id), and outputs a d-axis voltage command value (Vd*). Based on the d-axis voltage command value (Vd*) and a q-axis voltage command value (Vq*), a PWM control section (709) outputs a switching control signal (G1) for controlling a switching operation of a converter. A voltage command computation section (710) generates the DC voltage command (Vdc*) based on the d-axis voltage command value (Vd*). |
