Abstract: The present invention relates to a method of cooling a static electronic power converter device including at least one electrical circuit including an assembly of active components and of passive components mounted in a closed radiator housing from which only the inlet and the outlet of the circuit communicate with the outside of the housing, in which the distribution of the heat energy given off by the active and passive components is made uniform throughout the inside volume of the housing, and the heat energy is transferred from the radiator housing by forced convection in substantially uniform manner over the entire inside surface of the walls of the housing by causing at least one fluid contained inside the leaktight housing to circulate in a closed circuit. The invention also provides a static electronic power converter device enabling the method to be implemented.

Abstract: The present invention relates to a method of cooling a static electronic power converter device (1) comprising at least one electrical circuit (3) comprising an assembly of active components and of passive components (11, 12, 13) mounted in a closed radiator housing (2) from which only the inlet means and the outlet means of said circuit communicate with the outside of said housing, in which the distribution of the heat energy given off by said active and passive components is made uniform throughout the inside volume of said housing, and said heat energy is transferred from said radiator housing by forced convection in substantially uniform manner over the entire inside surface of the walls of said housing by causing at least one fluid (15) contained inside said leaktight housing to circulate in a closed circuit. The invention also provides a static electronic power converter device enabling the method to be implemented.