SYSTEM OG METODE TIL DRIFT AF EN ELEKTRISK EFFEKTOMFORMER

An electric power converter 104 for a renewable power source 102 includes at least one alternating current (AC) conduit 176,178,180 coupled to an external AC power device 106 and at least one direct current (DC) conduit 114,116,118,132 coupled to an external DC power device 102. The converter also includes at least one immersion structure 222,322 defining at least one immersion cavity 226,326 therein and a plurality of semiconductor devices 200,300. The semiconductor devices include a substrate 204,304 positioned within the immersion cavity. The substrate defines a plurality of heat transfer surfaces 206,207,306,307 thereon. The semiconductor devices also include at least one semiconductor die 202,302 coupled to the substrate, the AC conduit, and the DC conduit. The converter further includes a liquid 228,328 at least partially filling the immersion cavity such that the semiconductor die is fully immersed in and in direct contact with the liquid. Heat 248,348 generated in the semiconductor device induces a phase change in the liquid.