Power switch module and inverter with such a module

摘要

The module has top power switches (110-113) above bottom power switches (20-23) with two upper and lower walls (50, 60) respectively. A lower cavity (133) is arranged along and/or above the upper walls of each bottom switch. An upper cavity (134) arranged along and/or below the lower wall of each top switch cools the upper and lower walls by circulating the coolant in each lower and upper cavity. The coolant along the lower and upper walls of the top and bottom switches is circulated by lower closed canals (96) and upper closed canals (116). An Independent claim is also included for a multiphase inverter having two interrupters.