This paper proposes an input-series-output-parallel connected ZVS full bridge converter with interleaved control for
photovoltaic power conditioning systems (PV PCS). The input-series connection enables a fully modular power-system architecture,
where low voltage and standard power modules can be connected in any combination at the input and/or at the output, to realize
any given specifications. Further, the input-series connection enables the use of low-voltage MOSFETs that are optimized for a very
low RDSON, thus, resulting in lower conduction losses. The system costs decrease due to the reduced current, and the volumes
of the output filters due to the interleaving technique. A topology for a photovoltaic (PV) dc/dc converter that can dramatically
reduce the power rating and increase the efficiency of a PV system by analyzing the PV module characteristics is proposed. The
control scheme, consisting of an output voltage loop, a current loop and input voltage balancing loops, is proposed to achieve
input voltage sharing and output current sharing. The total PV system is implemented for a 10-kW PV power conditioning system
(PCS). This system has a dc/dc converter with a 3.6-kW power rating. It is only one-third of the total PV PCS power. A 3.6-kW
prototype PV dc/dc converter is introduced to experimentally verify the proposed topology. In addition, experimental results show
that the proposed topology exhibits good performance.