Power conversion apparatus, control device for power conversion apparatus, and method for controlling power conversion apparatus

A control device for a power conversion apparatus, the control device comprising:

• an oscillation component acquirer configured to acquire an oscillation component of a current flowing through a capacitor of an LC filter disposed between a power converter and an AC power source, the power converter being configured to perform power conversion between the AC power source and a load;
• a command generator configured to generate an input current command comprising a command of an input current of the power converter;
• a regulator configured to regulate the input current command based on the oscillation component acquired by the oscillation component acquirer;
• and
• an actuator configured to control the power converter based on the input current command regulated by the regulator.

A method for controlling a power conversion apparatus, the method comprising:

• acquiring an oscillation component of a current flowing through a capacitor of an LC filter disposed between a power converter and an AC power source, the power converter being configured to perform power conversion between the AC power source and a load;
• generating an input current command comprising a command of an input current of the power converter;
• regulating the input current command based on the acquired oscillation component;
• and
• controlling the power converter based on the regulated input current command.

A power conversion apparatus comprising:

• power converting means between an AC power source and a load;
• an LC filter disposed between the AC power source and the power converting means;
• and
• controlling means for controlling the power converting means to perform power conversion control between the AC power source and the load, the controlling means comprising:
• command generating means for generating an input current command comprising a command of an input current of the power converting means;
• oscillation component acquiring means for acquiring an oscillation component of a current flowing through a capacitor of the LC filter;
• regulating means for regulating the input current command based on the oscillation component acquired by the oscillation component acquiring means;
• and
• actuating means for controlling the power converting means based on the input current command regulated by the regulating means.