Gene Evaluation Algorithm for Reconfiguration of Medium and Large Size Photovoltaic Arrays Exhibiting Non-Uniform Aging

Energies

MuflihS. Alhammad¹  Mohammed Alkahtani²  Zuyu Wu³  Yihua Hu³  ColinSokol Kuka³  Chen Zhang⁴ 

[1] Aerospace, Canfield University, Bedford MK43 0AL, UK;Electrical Engineeri and Electronics Department, University of Liverpool, Liverpool L69 3GJ, UK;Electronic Engineering Department, University of York, York YO10 5DD, UK;School of Computer Science and Technology, China University of Mining and Technology, Xu Zhuo 221116, China;

关键词: solar photovoltaic;    rearrangement;    non-uniform aging;    reconfiguration;    gene evaluation algorithm;   

DOI  :  10.3390/en13081921

来源: DOAJ

【 摘 要 】

Aging is known to exert various non-uniform effects on photovoltaic (PV) modules within a PV array that consequently can result in non-uniform operational parameters affecting the individual PV modules, leading to a variable power output of the overall PV array. This study presents an algorithm for optimising the configuration of a PV array within which different PV modules are subject to non-uniform aging processes. The PV array reconfiguration approach suggests maximising power generation across non-uniformly aged PV arrays by merely repositioning, rather than replacing, the PV modules, thereby keeping maintenance costs to a minimum. Such a reconfiguration strategy demands data input on the PV module electrical parameters so that optimal reconfiguration arrangements can be selected. The algorithm repetitively sorts the PV modules according to a hierarchical pattern to minimise the impact of module mismatch arising due to non-uniform aging of panels across the array. Computer modelling and analysis have been performed to assess the efficacy of the suggested approach for a variety of dimensions of randomly non-uniformly aged PV arrays (e.g., 5 × 5 and 7 × 20 PV arrays) using MATLAB. The results demonstrate that enhanced power output is possible from a non-uniformly aged PV array and that this can be applied to a PV array of any size.

【 授权许可】

Unknown