Converter circuit comprising distributed energy stores

Abstract From the Canadian patent

The invention relates to a converter circuit comprising at least one phase module , having an upper and a lower converter valve wherein each converter valve has , at least one two-pole subsystem. According to the invention each two-pole , subsystem , has four semiconductor switches which can be switched off and are connected electrically in series, four diodes, which are each connected electrically back-to-back , in parallel with one semiconductor switch which can be switched off two , unipolar , storage capacitors, which are connected electrically in series and in parallel with the , series circuit comprising the semiconductor switches and an electronic , system, whose reference …