A new technique to enhance output power from solar PV array under different partial shaded conditions

Abstract

The performance of the Solar PV array is dependent on solar irradiation, temperature, power mismatch and shading. Solar PV arrays are losing its efficiency by the effect of shading. Solar PV array applications around the globe are reported with the problems of shading. Passing clouds, shade of a big tree, the neighbours building completely reduce the output power yield even though the size of Solar Power Plant is large. So, in order to solve this issue, a New Technique (Magic Square) is proposed in this paper to increase the generated power by configuring the modules of a shaded photovoltaic array. In this approach, the physical location of the modules in Total Cross Tied (TCT) connected in the solar PV array is arranged based on Magic Square arrangement pattern. The arrangement is done in such a way that, only the physical locations of the modules are changed and the electrical connections remained unaltered. In this work, the Global Peaks are achieved by plotting PV characteristics. For different types of shading patterns, the performance is calculated. The theoretical calculations are compared with MATLAB simulations to validate the results.