Photovoltaic (PV) systems are widely used in the different sectors of industry. However, they have relatively low efficiency due to their dependence on temperature and solar irradiation fluctuations. Several maximum power point trackers (MPPT) have been developed in the aim of improving the efficiency of these PV systems. In this paper, an improved incremental conductance (IncCon) MPPT control technique is proposed to detect the MPP provided by a small PV system that is able to overcome the limitations of conventional algorithms such as perturb and observe (P&O) and conventional (InCon) particularly in sudden variation of solar irradiation. To this end, we started by the development and verification of a model for the PV panels in ISIS Proteus software, where the different characteristics curves I-V and P-V are plotted and compared to theoretical ones. Then, the single ended primary inductor converter (SEPIC) part and that of the MPPT controllers are presented. Finally, a simulation in a semi-virtual environment is carried out by programming the MPPT control strategies (P&O, conventional and modified IncCon) in an Arduino allowing the control of a PV system equipped with a SEPIC converter. The obtained results, showing the effectiveness of the proposed algorithm, are presented and discussed.