| 摘要 |
PROBLEM TO BE SOLVED: To provide a control method of a power conversion device capable of preventing a VL control system from being made unstable by increasing the ratio of a gain to a voltage control rate.SOLUTION: While defining a potential at the side of a capacitor C1 as a reference, a voltage VL of a reactor L1 is detected. A first voltage control rate command ks** is a ratio for an amplitude of an AC voltage outputted from a power conversion section 2 to an average value of a DC voltage Vdc. A correction coefficient is calculated which becomes smaller as the first voltage control rate command ks** becomes smaller. A second voltage control rate command ks* is generated by performing correction of subtracting a correction amount H from the first voltage control rate command ks**, the correction amount H being calculated by a product of the voltage VL of the reactor L1 and the correction coefficient. A switching signal S that is generated on the basis of the second voltage control rate command ks* is given to the power conversion section 2. |
