Multilevel voltage source converters and systems

摘要: Nested neutral point clamped (NNPC) multilevel power converter stages and systems are presented, in which the stage includes an NPC inverter core circuit with a flying (switched) capacitor nesting circuit, switches of switched being gated using selected redundant switching states to control voltage capacitors achieve output having equally spaced step values. Multiple can meet cascaded or connected various configurations implement single multiphase conversion systems, higher voltages be achieved by forming into H-bridge configuration, connecting multiple series one another.