CONVERTER CELL, HIGH VOLTAGE MULTILEVEL CONVERTER AND ASSOCIATED METHOD

摘要

It is presented a converter cell arranged to be used in a high voltage multilevel converter. The converter cell comprises: an energy storage element; and a plurality of switching elements. The plurality of switching elements comprises at least one thyristor and a plurality of transistors; and each one of the at least one thyristor is provided in a position for a switching element in the converter cell where, during normal operation of the converter cell, the at least one thyristors is in a continuous conducting state. A corresponding multilevel converter and a method are also presented.