A Sliding Maximum Power Point Tracker for a Photovoltaic System

Abstract. This paper proposes a control strategy of a Maximum Power Point Tracking (MPPT) of a photovoltaic (PV) system. The system includes a photovoltaic array, a DC/DC converter and a DC/AC inverter connected to a load. The proposed strategy is based on the sliding mode control and it allows a direct control of power converter. The stability as well as the robustness of the system will be evaluated. This work is motivated by the need to use the maximal power of PV generator, which is a special source of energy that has a non-linear current-tension characteristic (I-V) dependent of temperature and solar irradiance. Some reliable simulation results are provided in this paper in order to demonstrate the efficiency of the proposed approach