A new modified maximum power extraction technique for wind and hybrid renewable energy systems

The power extracted from solar and wind energy systems vary with the change of the weather, reducing the efficiency of the system. As a result, an energy efficient method is required to locate the optimal operating point to extract the maximal amount of energy under different atmospheric conditions. This paper proposed a modified perturb and observe maximum power point tracking controller for wind and solar-wind hybrid energy systems. The controller uses a modified fixed perturb and observe method to reach MPP by varying the duty cycle of each input module. Results are provided on a 200W wind system as well as a 400W solar-wind energy system with varying irradiation intensity and wind speed to highlight the merits of the work.