Classic and intelligent techniques aim to locate and track the maximum power point of photovoltaic (PV) systems. However, the nonlinear nature of PV arrays regarding ambient conditions and unstable climatic factors hinders the extraction of the maximum power provided by the PV modules. As a result, the PV modules can extract a false MPP and convert less solar energy into electrical energy. Moreover, the choice of the DC-DC converter is essential because it needs to track the MPP regardless of the ambient conditions. This paper presents a solution to design a control scheme for a grid-connected photovoltaic (PV) system to solve the maximum power point tracking (MPPT) problem. The designed control structure solves the nonlinear problems in the model of the inverters.