SINGLE-PHASE FIVE-LEVEL POWER CONVERTER

摘要

A single-phase five-level power converter comprises a three-phase bridge and two coupled inductors. The output terminal (1) of one of the bridge arms of the three-phase bridge is configured as one output terminal (a) of the converter. The output terminals (2, 3) of the other two bridge arms of the three-phase bridge are connected with the two non-common connection nodes of the two coupled inductors, respectively. The common connection node of the two coupled inductors is configured as the other output terminal (b) of the converter. The two coupled inductors are connected in series. The converter can be used in single-phase inverters or rectifiers. Three such converters can be connected to form a three-phase five-level power converter. Multiple such converters can be connected in cascade to form a power converter with more levels.