| Summary: | An investigation of auto-reconfiguration scheme for interchanging the electrical connections of photovoltaic (PV) array of 3 × 3 size, from series-parallel (SP) to total cross-tied (TCT) configuration under partial shading conditions (PSCs) is presented. The progressive increment shading patterns- 1, 2 and 3 are considered for the extensive comparative analysis for experimental and MATAB/Simulink system. The experimental system comprises three sections: under section I, four relays are used in 3 × 3 PV modules matrix, under section II, an Arduino based relay circuit operation control scheme is designed to modify the electrical connections of PV module and the wireless based User End Operating System (UEOS) is discussed in section III. Furthermore, the mathematical modeling of PV array is validated under the environment of MATLAB simulation to procured. The performance analysis of the system is successfully carried out in terms of power and voltage at global maximum power point (GMPP), power losses and fill factor (FF). Keywords: Photovoltaic array, Series-parallel, Total cross-tied, Power loss, Fill factor
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