Solar PV array reconfiguration under partial shading conditions for maximum power extraction using genetic algorithm

This paper presents Genetic Algorithm based reconfiguration scheme for the arrangement of PV modules in a PV array which exhibits increased array power generation under partially shaded conditions. The reconfiguration technique involves changes in the electrical interconnections for shade dispersion keeping the physical location of the PV modules unchanged. The proposed approach achieves a fairly uniform distribution of the shadow all over the panel thereby avoiding concentration of shadow on any one row thus equalizing the row currents to a greater extent as compared to other two reconfiguration schemes. The system performance is analyzed for various shading conditions and it is proved that the proposed technique is superior and yields better results as compared to the TCT and Su Do Ku arrangement.

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