Ge Energy Power Conversion Technology Gmbh

Ge Energy Power Conversion Gmbh

Converteam Gmbh

Marco Boni

Christoph Saniter

Roland Jakob

Jörg Janning

Wolfgang Lasse

Sebastian Hildebrandt

Niels Weitendorf

Günter Junge

Bernd Luban

Roland Dr-Ing Jakob

Frank Neuber

A method for operating an electrical circuit, in particular of a converter is described. The circuit, in at least one embodiment, includes a line-side converter that is coupled to a capacitor. The line-side converter includes at least two series connections, each including at least two power semiconductor elements, and each of the at least two series connections being connected parallel to the capacitor. The line-side converter is coupled to an energy supply system. The DC voltage that is present at the capacitor is determined. A maximum voltage is predetermined. If the DC voltage present at the capacitor is determined to be greater than the maximum voltage, then at least two of the power semiconductor elements are switched into their conductive state in such a manner that the capacitor is discharged in the direction of the energy supply system.

Method for operating an electrical circuit and electrical circuit

A method for operating an electrical circuit is described herein. The circuit includes a power converter having a plurality of switches and two capacitors that are parallel to the switches. The plurality of switches and the two capacitors are connected in series. The power converter has two AC voltage-sided connections and a measuring resistor is connected to the ground. A ground fault is detected by measuring a voltage drop in a measuring resistor.

Procedures for the operation of an electrical circuit

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Berlin, Germany

Marco Boni