Operation characteristics of two-stage DC/DC converter for photovoltaic system

Solar cell is one of the most important new renewable energy sources for future energy generation. This paper presents a novel two stage DC/DC converter topology for photovoltaic (PV) power conditioning systems (PCSs). The proposed converter consists of an interleaved boost converter and a two-tank LLC resonant converter which is connected in parallel in primary and series in secondary. The main idea of the topology is that the system can achieve either unilateral or bilateral operations along with the level of output voltage from the PV module, which accordingly leads to an enhanced performance.