Patent ID: 8422260
Filing Date: 2013-04-16
Classification: H01F,H02J,H02M,Y02E

Abstract:
1. An arrangement connected to a direct voltage network for transmitting high voltage direct current, said arrangement being provided for converting direct voltage into alternating voltage and conversely, said arrangement comprising: a multi-cell Voltage Source Converter having: a transformer, for each of the at least one phase leg, configured to connect said phase output to an alternating voltage phase line associated with said phase leg, the transformer including two primary windings and a secondary winding, wherein said phase reactors of the at least one phase leg are built in in said transformer by using the two primary windings of the transformer, each of the two primary windings connects a corresponding one of the two halves of said series connection of switching cells to the mid point, each of the two primary windings of the transformer is arranged to interact with the secondary winding of the transformer that is connected to said alternating voltage phase line, and said two primary windings are so located with respect to each other such that a dc component of a current flowing from one of said poles to the other of said poles through said mid point flows in substantially opposite directions through the two primary windings.