Stromrichterschaltungsanordnung mit einer Mehrzahl von parallelen Stromrichtern bzw. Stromrichterzweigen und dazwischen geschalteten Ausgleichsdrosseln

摘要

A converter circuit arrangement has a number of converters or converter branches (2) in parallel with an intermediate circuit (7) and they are each equipped with at least two series semiconductor switches triggered synchronously, especially Igbt with parallel flyback diodes. A middle terminal of the series circuit forms a load terminal and between the two load terminals of every neighbouring pair of converters or converter branches is an equalising choke. This choke comprises at least one annular core of arbitrary shape. The load terminals (4) of neighbouring converters or converter branches are looped through each ring core from different sides and are led to a common load terminal (6) of all parallel converters or converter branches.