Electric power inverter for an electrical machine of an electrically powered drive system, - wherein the electric power inverter incorporates a capacitor board having a plurality of capacitors , and at least one semiconductor board having a plurality of power semiconductors , and - wherein the capacitor board and the at least one semiconductor board are mutually stacked in a stacking direction , with a clearance, in a stack formation , and are electrically interconnected, - wherein the plurality of capacitors on the capacitor board are arranged in the stacking direction , and are fitted to a side thereof facing the at least one semiconductor board , - wherein the plurality of capacitors are arranged on the capacitor board to form at least one open location space between the capacitors on the capacitor board , each location space positioned to accommodate a respective one of the at least one semiconductor board , and - wherein the at least one semiconductor board is arranged within the respective location space , with a clearance to the capacitor board , characterized in that - the capacitor board and the at least one semiconductor board are mutually electrically bonded by means of at least two connecting busbars , - the at least two connecting busbars and an electrically-insulating busbar guide plate are arranged in the location space between the capacitor board and the at least one semiconductor board , and both maintain a clearance between the capacitor board and the at least one semiconductor board , - the electrically-insulating busbar guide plate is stacked in the stack formation of the electric power inverter in the stacking direction , and arranged in the location space adjacently to the capacitor board and the at least one semiconductor board , and - the at least two connecting busbars are fitted to the busbar guide plate , perpendicularly to the stacking direction and the busbar guide plate , in a penetrative manner. - wherein the electric power inverter incorporates a capacitor board having a plurality of capacitors , and at least one semiconductor board having a plurality of power semiconductors , and - wherein the capacitor board and the at least one semiconductor board are mutually stacked in a stacking direction , with a clearance, in a stack formation , and are electrically interconnected, - wherein the plurality of capacitors on the capacitor board are arranged in the stacking direction , and are fitted to a side thereof facing the at least one semiconductor board , - wherein the plurality of capacitors are arranged on the capacitor board to form at least one open location space between the capacitors on the capacitor board , each location space positioned to accommodate a respective one of the at least one semiconductor board , and - wherein the at least one semiconductor board is arranged within the respective location space , with a clearance to the capacitor board , - the capacitor board and the at least one semiconductor board are mutually electrically bonded by means of at least two connecting busbars , - the at least two connecting busbars and an electrically-insulating busbar guide plate are arranged in the location space between the capacitor board and the at least one semiconductor board , and both maintain a clearance between the capacitor board and the at least one semiconductor board , - the electrically-insulating busbar guide plate is stacked in the stack formation of the electric power inverter in the stacking direction , and arranged in the location space adjacently to the capacitor board and the at least one semiconductor board , and - the at least two connecting busbars are fitted to the busbar guide plate , perpendicularly to the stacking direction and the busbar guide plate , in a penetrative manner. <EOS>