Power maximization using multiple step, load-side, current-mode sensing

This paper presents a novel load-side maximum power point tracker using a multiple step difference algorithm. This technique maximizes the power into any given load using a current-mode, load-side controller under various insolation levels. MATLAB/Simulink was used for simulation studies using a normalized, heuristic, photovoltaic model while an off-the-shelf, four-switch buck-boost converter was employed along with a controllable, indoor, built-in-house, solar simulator for experimental validations. The proposed method guarantees maximum power tracking under various weather conditions and operates at unity power factor on a self-synchronized basis.