| 摘要 |
<p>A power conversion device (18) is configured so as to cool switching elements by using a built in ebullient cooling device utilizing a boiling phenomenon of a refrigerant. The power conversion device (18) has a control unit (17) that controls the operation of the power conversion device (18) on the basis of the differential between element mounting surface temperature (Tf) that is the temperature of the surface on which the switching elements are mounted and cooling device intake air temperature (Ta). When the differential between element mounting surface temperature (Tf) and the cooling device intake air temperature (Ta) exceeds a predetermined threshold value the control unit (17) performs control for stopping the power conversion device (18).</p> |
