This paper presents the modeling of a proposed multiple input, single output converter system for use mainly to interface several renewable energy sources into a single load connection point. More specifically, modeling of a system involving ac and dc supplied to the multiple inputs, single output DC-DC converter will be described and then verified via simulation using OrCAD Pspice to exhibit its functionality. Results of the simulation of one model show the achievement of equally supplied source currents. Details of the modeling and the accompanying computer simulation of the proposed converter will be discussed.