Power conversion device

A power conversion device comprising:

• a power conversion circuit including a plurality of semiconductor elements;
• a smoothing circuit including a plurality of output capacitors, a positive-side conductor having at least one bent structure, and a negative-side conductor;
• a positive-side output terminal;
• a negative-side output terminal;
• and
• a substrate including a first substrate connecting part and at least one second substrate connecting part, wherein
• a first end of the positive-side conductor is connected to a positive-side output of the power conversion circuit, and a second end of the positive-side conductor is connected to the positive-side output terminal,
• a first end of the negative-side conductor is connected to a negative-side output of the power conversion circuit, and a second end of the negative-side conductor is connected to the negative-side output terminal,
• the plurality of output capacitors is mounted on the substrate, a first end of each of the output capacitors is connected to the positive-side conductor at the first substrate connecting part, and a second end of the each of the output capacitors is connected to the negative-side conductor at the at least one second substrate connecting part,
• the plurality of output capacitors includes one or more first capacitors and one or more second capacitors smaller in size than the first capacitors,
• a shortest distance between the first substrate connecting part and the second substrate connecting part on the substrate is shorter than an inter-terminal length of the first capacitor and longer than an inter-terminal length of the second capacitor, and
• the second capacitor is mounted between the first substrate connecting part and the second substrate connecting part.