A generalised multi-level current sourced inverter derived using duality theory

This paper will use duality principles to develop a family of generalised current source inverters from existing generalised multilevel voltage source inverters. Recently a multilevel voltage source inverter structure has been proposed which includes the flying capacitor and diode clamped multilevel inverters. The generalised structure is developed from a generalised cell. The duality transform, when applied to the generalised inverter, produces a generalised range of converters with advantages for high current applications. The current source structure is also based on a generalised cell. Some elements may be removed from the generalised structure to give the dual equivalents of the diode clamped and flying capacitor voltage source inverters. Two new topologies for high current SMPS inverter and rectifier applications are demonstrated.