Abb Schweiz Ag

Abb Technology Ltd

Fabienne Chataignere

Roland Siljeström

Lars Döfnäs

Per-Olov Hedblad

Patrik Sandquist

Patrik Karlsson

Rolf Ottersten

Stellan Dahlgren

A voltage source converter includes a black start control unit and cells, where each cell includes a first switch between a first end of a cell capacitor and a first cell terminal, a second switch between a second end of the cell capacitor and the first cell terminal, where a second cell terminal is provided via the first or the second end of the cell capacitor, a first power supply unit and a second power supply unit, where the black start control unit is configured to perform, after the initial application of a DC voltage to a cell terminal of a cell and the subsequent initial charging of the chargeable power supply unit of one of the switches, charging of an uncharged power supply unit of the other switch through repeatedly turning on and off the switch with initially charged power supply unit.

Black start of a multilevel voltage source converter

A converter for converting alternating voltage into direct voltage and vice versa in a converter station of a high voltage transmission system including a series connection of a plurality of converter valves. The converter has connections to transformers on both of two opposite sides of the converter valves.

Converter for converting alternating voltage into direct voltage and conversely

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Ludvika, Sweden

Fabienne Chataignere