Abstract: A method for assessing the state of damage of a semiconductor module that is subject to operational loading, in particular a semiconductor module of a drive system converter, that includes at least one semiconductor component arranged on or in a support structure. It is possible not only to estimate a spent service life for the entire semiconductor module, but also to detect unexpected or undesirable loading states and thus a premature reduction of the remaining service life of the semiconductor module. Continuous load assessments are thus possible already during the operation of the semiconductor module and allow interventions to be made in good time.

Abstract: A method for assessing the state of damage of a semiconductor module that is subject to operational loading, in particular a semiconductor module of a drive system converter, that includes at least one semiconductor component arranged on or in a support structure. It is possible not only to estimate a spent service life for the entire semiconductor module, but also to detect unexpected or undesirable loading states and thus a premature reduction of the remaining service life of the semiconductor module. Continuous load assessments are thus possible already during the operation of the semiconductor module and allow interventions to be made in good time.

Abstract: The invention relates to a method for actuating inverter stages (2) switched in parallel, wherein each inverter stage (2) comprises several switching elements (3) with two switching states each. In accordance with the invention, the actuation of the inverter stages (2) occurs via a central control unit (6) which is connected to each inverter stage (2) via a serial data transmission path (5). Measures are proposed for transmitting the selected switching states from the central control unit (6) to the respective inverter stage (2) in order to ensure secure operation of the inverter stages (2) over a plurality of switching processes on the one hand and to reliably prevent functional impairments of the switching elements (3) by erroneous actuation, but to also carry out the actuation of the switching elements (3) of the inverter stages (2) in a sufficiently rapid way on the other hand in order to avoid impairing the quality of the output current formed by the inverter stage (2).

Abstract: The invention relates to a method for actuating inverter stages (2) switched in parallel, wherein each inverter stage (2) comprises several switching elements (3) with two switching states each. In accordance with the invention, the actuation of the inverter stages (2) occurs via a central control unit (6) which is connected to each inverter stage (2) via a serial data transmission path (5). Measures are proposed for transmitting the selected switching states from the central control unit (6) to the respective inverter stage (2) in order to ensure secure operation of the inverter stages (2) over a plurality of switching processes on the one hand and to reliably prevent functional impairments of the switching elements (3) by erroneous actuation, but to also carry out the actuation of the switching elements (3) of the inverter stages (2) in a sufficiently rapid way on the other hand in order to avoid impairing the quality of the output current formed by the inverter stage (2).

Abstract: The present invention relates to a rectifier circuit with a three-phase rectifier arrangement (1) of semiconductor valves (2), preferably a bridge rectifier circuit of diodes, wherein the rectifier arrangement (1) comprises a three-phase mains input (3) and a DC output (4), and at least one of the three phases (U, V, W) at the mains input (3) is connected to a first pole connection (A) of a three-pole circuit (5) for diverting an injection current (ih3) into the three-pole circuit (5).

Abstract: The present invention relates to a rectifier circuit with a three-phase rectifier arrangement (1) of semiconductor valves (2), preferably a bridge rectifier circuit of diodes, wherein the rectifier arrangement (1) comprises a three-phase mains input (3) and a DC output (4), and at least one of the three phases (U, V, W) at the mains input (3) is connected to a first pole connection (A) of a three-pole circuit (5) for diverting an injection current (ih3) into the three-pole circuit (5).