method and device for switching on or off of the power semiconductors, in particular to a drehzahlvariables running an asynchronous machine, operating a zu00fcndschaltung for engines, and switching power supply

摘要

a method and a device used to switch on and off of the power semiconductors, in particular of igbts or power mos fets with inductive load, as she prefers to drehzahlvariablen operation of asynchronmaschinen in zu00fcndschaltungen for otto engines, switched mode power supplies or in power factor controllers are used.a power on the sloping voltage (uu00b6ceu00b6; uu00b6dsu00b6) as well as by the power flowing stream (iu00b6cu00b6; iu00b6du00b6) are considered and their temporal evolution during the schaltvorganges regulated.the rules of the time course of the voltage (uu00b6ceu00b6; uu00b6dsu00b6) and the regulation of the timing of the flow (iu00b6cu00b6; iu00b6du00b6) are mainly carried out in time to each other (figure 3c and 3d).