Ge Energy Power Conversion Gmbh

Ge Energy Power Conversion Technology Gmbh

Converteam Gmbh

Jörg Janning

Martin Geske

Roland Jakob

Christoph Saniter

Marco Boni

Samir Salama

Norbert Niesel

Axel Brandt

Sebastian Hildebrandt

Alex Brandt

Jürgen Prof Dr-Ing Petzoldt

Uwe Dr-Ing Rädel

Ralf Nieschler

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

An electrical frequency converter for coupling an electrical power supply grid with an electrical drive includes a first power converter connected to the power supply grid. The first power converter includes at least two connections in series. A second power converter is connected to the electrical drive and includes at least two connections in series. Each of the connections in series of the first and second power converters includes at least two modular switches. Each modular switch includes a first connection in series having a first controllable power semiconductor component and a first diode. The modular switch further includes a second connection in series having a second controllable power semiconductor component and a second diode. The modular switch further includes a capacitor. The first connection in series, the second connection in series and the capacitor are connected in parallel.

Electrical frequency converter for coupling an electrical power supply grid with an electrical drive

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Berlin, Germany

Jörg Janning