MEDIUM VOLTAGE HYBRID MULTILEVEL CONVERTER AND METHOD FOR CONTROLLING A MEDIUM VOLTAGE HYBRID MULTILEVEL CONVERTER

摘要

A multilevel converter includes a power supply assembly with a plurality of phases, and a power cell assembly with first power cells and second power cells. The first power cells and second power cells have a same topology and a same current rating, and supply power to the plurality of phases of the power supply assembly. Each phase of the plurality of phases includes a first power cell and a second power cell of the power cell assembly, voltage ratings of the first power cells and the second power cells being different. Furthermore, a method for controlling a multilevel converter and an electric drive system comprising a multilevel converter are disclosed.