| 摘要 |
A power conversion device includes a converter (1) which converts AC power supplied from an AC power source (e1) into DC power, a DC reactor (3), and an inverter (2) which converts the DC power provided from the converter (1) through the DC reactor (3) into AC power and supplies the AC power to a load. A control unit (20) controls the converter (1) according to a sum of a feedback control amount and a feedforward control amount, the feedback control amount being calculated based on a deviation between a current command value and the DC current flowing into the DC reactor (3), the feedforward control amount being set in accordance with a DC voltage provided from the converter (1) through the DC reactor (3). When an output frequency of the inverter (2) is in a first region, the control unit (20) reduces a control gain used to calculate the feedforward control amount, as compared to when the output frequency is in a second region having a frequency lower than that of the first region. |
