Extraction of Maximum Power From a PV Array Under Nonuniform Irradiation Conditions

In this paper, a generalized algorithm for the physical relocation of the modules with a fixed electrical connection (PRM-FEC) in total cross tied (TCT) configuration of an m × n (where m and n are the number of rows and columns) photovoltaic array is presented for digit m that is either odd or even number. This rearrangement of the TCT configuration distributes the shadows over the array, and hence, it increases the power output of an array under partial shading conditions. The proposed scheme is simple and cost effective. The comparison of power generated by an array with the TCT, electrical array reconfiguration, and the PRM-FEC configuration is performed with MATLAB simulation and also the simulation results are validated with experimental results. The performance of the PRM-FEC configuration is superior to the TCT configuration.

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