POWER CONVERTER

A power conversion device according to the present invention includes: a power module (300) that converts DC power into AC power and supplies the AC power to a motor; an electronic circuit board (22), placed above the power module (300), that drives the power module (300); and a housing (12) that includes a power module mounting surface on which the power module (300) is mounted, and houses the power module (300) and the electronic circuit board (12), wherein: the power module (300) includes a first protruding section (350) that is formed to protrude towards the electronic circuit board (22), and is engaged with a recess or a hole (352) formed on the electronic circuit board (22); and a second protruding section (351) that is formed to protrude towards the housing (12), and is engaged with a recess or a hole (354) formed on the housing (12), wherein: the first protruding section (350) and the second protruding section (351) are aligned in a substantially vertical direction of the power module mounting surface of the housing (12).