Synthesis of a new class of converters that utilize energy recirculation

A new class of switchmode power electronic circuit topologies, named energy recirculation and storage circuits (ERSCs), are described which have the characteristic of storing and recirculating energy in a return path to augment the source. A port reduction technique is developed which connects output to input and is applied to buck and boost derived converters. A description of circuit operation is given for an ideal boost/buck ERSC. Two possible applications for ERSCs are for in-situ testing of power devices and for power factor correction. The second utilizes a cascaded boost/buck ERSC as an output-regulated power-factor correction (PFC) circuit. The PFC-ERSC is evaluated and a detailed description with key equations included