Variable Step-Size Modified P&O-based MPPT Algorithm for the Photovoltaic Systems

The utilization of renewable energy sources is being enlarged daily to meet the escalating energy needs around the world. Solar energy, like other renewable energy sources, occupies an important place in the energy generation sector. Since it is important to increase energy efficiency in photovoltaic (PV) systems, maximum power point tracking (MPPT) is performed with one type of variable step-size P&O algorithm in this paper. The whole system modeling, the design of the presented MPPT algorithm and the tests are performed in the MATLAB/Simulink simulation environment. Also, the system is created with a configuration that includes a PV panel, input filter, boost converter, and load. On the other hand, an irradiance change profile including step changes, linear increasing and linear decreasing levels is created and tests are carried out by running this MPPT algorithm. According to the obtained results, it seems that the power capture from the PV system has been successfully achieved.