Patent ID: 6621719
Filing Date: 2003-09-16
Classification: H02M

Abstract:
A power-electronic circuit arrangement for transmitting real power from a DC voltage-side to at least two AC voltage-side connections or vice versa, comprisinga first power converter which is connected to a DC voltage source with a first intermediate-circuit capacitor voltage and has at least two load connections, and at least one second power converter, which is connected to one of the load connections and is connected to an AC voltage-side connection, and which has a second intermediate-circuit capacitor voltage and in which case, by means of the second power converter, one or more of: the positive second intermediate-circuit capacitor voltage, the negative second intermediate-circuit capacitor voltage or zero volts can be added to a voltage value which can be connected by the first power converter to its load connection, wherein the at least one second power converter does not have its own power supply means.