Power conversion device, power conversion system, and power conversion method

A power conversion method for controlling a first power conversion circuitry having a primary side and a secondary side configured to convert primary side power into secondary-side power comprising:

• generating a command value associated with the secondary-side power;
• calculating a limited command value by modifying the command value so that the command value is equal to or less than a secondary-side limit, wherein the first power conversion circuitry is controlled based on the limited command value;
• transmitting the limited command value to a second power conversion device comprising a second power conversion circuitry connected in parallel to the first power conversion circuitry;
• receiving, from the second power conversion device, information indicating an adjustment value, wherein the adjustment value is added to the limited command value for controlling the second power conversion circuitry;
• and
• modifying the secondary-side limit based on a difference between a primary-side limit associated with the primary-side power and the adjustment value.

A non-transitory memory device for controlling a first power conversion circuitry having a primary side and a secondary side configured to convert primary-side power into secondary-side power, the non-transitory memory device having instructions stored thereon that, in response to execution by a processing device, cause the processing device to:

• generate a command value associated with the secondary-side power;
• calculate a limited command value by modifying the command value so that the command value is equal to or less than a secondary-side limit, wherein the first power conversion circuitry is controlled based on the limited command value;
• transmit the limited command value to a second power conversion device comprising a second power conversion circuitry connected in parallel to the first power conversion circuitry;
• receive, from the second power conversion device, information indicating an adjustment value, wherein the adjustment value is added to the limited command value for controlling the second power conversion circuitry;
• and
• modify the secondary-side limit based on a difference between a primary-side limit associated with the primary-side power and the adjustment value.