Optimising single-phase PFC pre-staged AC/DC/ACtopology via common-neutral connection

A new topology for the single-phase PFC-pre-staged AC/DC/AC converter is presented. The introduction of a common-neutral connection simplifies the conventional connection of an AC/DC/AC structure, and gives a new topology that still has good performance, conforms with output safety regulations and has other advantages such as requiring fewer power devices and having lower conduction losses.