A power conversion device includes a power conversion unit to convert an input power into an output power, a regular controller to perform control of the power conversion unit, and a protective controller to perform protective operation of the power conversion unit. The regular controller, on the basis of current command value in accordance with a target value of an output of the power conversion unit and an output current of the power conversion unit, for example, outputs a control signal to control on-off switching of switching elements included in the power conversion unit. When at least one value corresponding to the output power of the power conversion unit is not within the target power range determined in accordance with the target value of the output, the protective controller stops the power conversion by the power conversion unit.