ELECTRICAL CONVERTER SYSTEM

摘要

The present invention relates to an electrical converter system for current supplies which is made up of individual modules. Each of the similar modules contains a module capacitor and can be switched via switching elements so that the module capacitors of the modules can be connected in series or in parallel, or so that a current flow takes place through the modules without charging or discharging the module. In this way the voltage can be switched in stages with low loss on the terminals of the converter system by appropriate control of the switching elements. According to the invention, before parallel connection of module capacitors, the voltage can be adjusted by a charge equalisation of these capacitors so that the corresponding losses are minimised.