Maximum power point tracking using dual PI fuzzy controller for photovoltaic system

In this paper we propose an intelligent control method to track the maximum power point (MPP) of a standalone photovoltaic system. The output power of a photovoltaic panel depends on solar irradiation and temperature. So it is important to operate the photovoltaic (PV) panel in its maximum power point. Our system is composed of a PV panel which supplies a DC load, a DC-DC converter, considered as an adaptation stage between the PV and the DC load. The idea of the proposed technique is to use dual PI fuzzy controller to generate a suitable duty cycle for the DC-DC converter. The simulation result shows the effectiveness of the system and the good performance of the proposed method.