Experimental Validation of a Photovoltaic Scan Circuit for Global Maximum Power Point Tracking

This paper presents the partial shading effect on a solar photovoltaic system and proposes a circuit for scanning the power-voltage curve. In the first part of this document the partial shading effect is presented, then an experimental set-up is shown where a simple Perturb & Observe algorithm is trapped in a local point of maximum power. The next part gives design guidelines for the electronic board implementation and finally the experimental results with different power and shadow conditions are presented.