Power enhancement from partially shaded modules of solar PV arrays through various interconnections among modules

Priya Ranjan Satpathy, Sasmita Jena and Renu Sharma

Energy, 2018, vol. 144, issue C, 839-850

Abstract: Partial shading is considered as a curse for Solar Photovoltaic (SPV) array that targets to reduce system performance by minimizing power generation and creating hotspot that can damage the SPV modules connected in that array. During partial shading condition, irradiance received by the modules are different that leads to decrease in power generation from the SPV system. In this paper, the effect of partial shading is investigated for SPV arrays having different interconnection topologies to realize a configuration that can be a solution for all types of shading patterns. The three widely interconnection topologies namely Series-Parallel (SP), Bridge-Linked (BL) and Total Cross Tied (TCT) have been chosen for comparison. A comparison in power generation and mismatch power losses among these connections is done using MATLAB/SIMULINK environment and a prototype field experiment under different irradiance and shading patterns. The connections are studied in presence and absence of bypass diodes. It have been authenticated that despite of redundancy, TCT can be implemented in larger SPV arrays to enhance power generation under different shading patterns that results in minimization of mismatch loss in SPV system.

Keywords: Partial shading; Array configurations; Shading patterns; Power generation; Mismatch power loss (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (14)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:144:y:2018:i:c:p:839-850

DOI: 10.1016/j.energy.2017.12.090

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