POWER CONVERSION DEVICE AND STORAGE MEDIUM

A power conversion device includes a high-potential side path that electrically connects a positive electrode terminal of a first electrical storage unit and a high-potential side terminal of an upper arm switch of an inverter, a low-potential side path that electrically connects a negative electrode terminal of a second electrical storage unit and a low-potential side terminal of a lower arm switch, a connection path, a neutral point capacitor, a parameter detection unit that detects an electrical parameter of the neutral point capacitor or the connection path, and a control unit. When performing switching control of the inverter to supply current to the connection path, the control unit determines whether an electrical disconnection abnormality has occurred on the connection path, based on a detection value of the parameter detection unit.