Power conversion device and storage medium

A storage medium in which a program is stored which is applied to a power conversion device that includes:

• an inverter that has an upper arm switch and a lower arm switch;
• a motor that has an armature winding electrically connected to a low-potential side terminal of the upper arm switch and a high-potential side terminal of the lower arm switch;
• and
• a computer, wherein
• the 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 the upper arm switch;
• 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 the lower arm switch;
• a connection path that electrically connects a negative electrode terminal of the first electrical storage unit or a positive electrode terminal of the second electrical storage unit, and the armature winding;
• a neutral point capacitor connected to the connection path;
• and
• a parameter detection unit that detects an electrical parameter of the neutral point capacitor or the connection path, and
• when performing switching control of the inverter to supply current to the connection path, the program causes the computer to perform determination processing that determines whether an electrical disconnection abnormality has occurred on the connection path, based on a detection value of the parameter detection unit.