Improved-Odd-Even-Prime Reconfiguration to Enhance the Output Power of Rectangular Photovoltaic Array under Partial Shading Conditions

Abstract

The output power of a PV (photovoltaic) array decreases due to the partial shading condition (PSC). If one or more PV modules receives less irradiance compared to other PV modules in a PV array then it is called PSC. To enhance the output power of PV array under PSC, Sudoku, and Optimal Sudoku Reconfiguration techniques are available in the literature for perfect squared PV arrays, such as 4×4, 9×9, and 16×16. Odd–Even and Odd–Even–Prime reconfigurations are available for rectangular PV arrays. To enhance the output power of rectangular PV array further, this paper proposed a new reconfiguration technique called Improved Odd–Even–Prime reconfiguration. To validate the proposed method, two PV arrays 9×9 and 8×9 have been implemented.

Study on Effect of Partial Shading Irradiance Conditions in Photovoltaic Solar Arrays

“…It results in high electricity production, which makes it suitable for implementation in large-scale PV power plants. Moreover, compared to other configurations [48,64,70], the power losses are significantly reduced. In general, any change in the solar irradiance that affects the power losses of PV solar array can be found and electrically separated from the PV solar array with bypass and blocking diodes.…”

“…However, bypass diodes have some limitations [40] and induce multiple local maximum power points (LMPPs) in the output P-V characteristics of the solar PV arrays under partial shading conditions [43][44][45] implying energy losses and low efficiency [44]. To improve the energy harvesting during partial shading and mitigate its effects various reconfiguration strategies for PV solar arrays are developed, like [32,[36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55].…”