Ultimate Generalized Multilevel Converter Topology
Xibo Yuan
Abstract
There are various ways to derive multilevel converter topologies as pointed out by the author's previous work. This letter proposes a voltage-source generalized multilevel converter topology that unifies several generalized multilevel topologies and also incorporates bidirectional switches. Most of the known multilevel topologies can be derived from this topology and new topologies can also be derived from it. Examples have been given in this letter. This generalized topology helps to understand complicated converter topologies, especially those with bidirectional switches and it can also be used to determine the voltage requirements/ratings of the devices in various topologies. This letter has summarized the rules to derive topologies from this generalized topology and provides experimental results for one of the derived multilevel converter examples. It is expected that new topologies can be inspired or derived from this letter and used for existing and emerging applications, with this letter as a milestone in the research of multilevel converter topologies.