Hidden DC-link AC/AC converter using bilateral power switches

摘要

The invention resides in providing bilateral switches between the respective phase lines of an AC input source and a common phase line of an AC output to form a phase line group of said bilateral switches on each AC output line; in fact, controlling the bilateral switches of each group so as to generate with AC input lines a DC link voltage with respect to the associated AC output line, and secondly in controlling the bilateral switches in such group to modulate such DC link voltage in relation to a desired AC voltage for such associated AC output line, each of said groups being operated with a corresponding phase shift to provide a corresponding phase shift between the respective output phase lines.