Analysis and design of IGBT- based AC/AC direct converters built of conventional current source inverter modules

This work presents the analysis and design of a new direct power converter topology for AC/AC conversion with reduced passive components and extended output voltage range. It follows up the principle of a four-quadrants cycloconverter, but IGBTs are used at building the power stage. Operation of this converter, details of implementation and comparison with usual solutions for three-phase to three-phase conversion are detailed. Demonstrated merits recommend this solution for use in high power applications.