Improved variable-step incremental conductance MPPT algorithm applied to photovoltaic storage systems

Abstract For the traditional PV maximum power tracking control method in terms of speed and stability, proposed an improved variable-step incremental conductance method. The first speeds up by constant voltage coefficient to quickly locate around MPP(Maximum point,MPP) dynamically adjusts step size using inverse tangent function value when operating point is located left point, exponential right. Given characteristics photovoltaic generation, it usually constitutes a light storage system with energy battery. To verify effectiveness, simulation experiments are carried out Matlab/Simulink build model, which contains Results indicate that new achieves optimization precision according nature can make battery charge discharge stably, verifies practicality algorithm.