Hybrid MPPT Control Applied to a Flyback Micro-Inverter Connected the Electrical Grid

摘要

The micro-inverters for photovoltaic panels are capable of transforming the continuous energy the photovoltaic panels in alternate with a nominal voltage value equal to that of the supply. This technology is being increasingly improved and one of the points to be explored is the Maximum power point tracking of the photovoltaic panels. Therefore, this paper proposes a hybrid tracking algorithm with variable step size based on the conventional methods of Perturb and Observe and Incremental Conductance. The proposed method is compared with conventional methods and with some methods presented in the literature. In the presented results, the accuracy of the proposed algorithm of tracking with flyback micro-inverter reached a peak of 99.16% while the highest efficiency of the comparative methods was 98.95% obtained with the conventional method of Incremental Conductance.