| 摘要 |
PROBLEM TO BE SOLVED: To provide a power conversion device that allows suppressing harmonics in AC power.SOLUTION: A power conversion device 1 is provided between an AC power supply 3 and a DC load 4. The power conversion device 1 includes an inverter circuit 13 and a converter circuit 14. A control device 15 feedback-controls the inverter circuit 13 and the converter circuit 14. The feedback control controls the inverter circuit 13 and the converter circuit 14 so that a constant DC voltage Vdc is supplied to the DC load 4 and an input current from the AC power supply 3 has a sinusoidal wave synchronized with an AC voltage Vac of the AC power supply 3. The control device 15 includes a correction section 51 correcting the feedback control so as to suppress a ripple component in a voltage Vc of a smoothing capacitor Cs on the basis of the voltage Vc of the smoothing capacitor Cs. This allows suppressing harmonics in the input current due to the ripple component in the voltage Vc of the smoothing capacitor Cs. |
