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A new approach of PV system structure to enhance performance of PV generator under partial shading effect
Journal of Cleaner Production ( IF 11.1 ) Pub Date : 2021-07-20 , DOI: 10.1016/j.jclepro.2021.128349
N. Belhaouas 1 , F. Mehareb 1 , H. Assem 1 , E. Kouadri-Boudjelthia 1 , S. Bensalem 1 , F. Hadjrioua 1 , A. Aissaoui 1 , K. Bakria 1
Affiliation  

The PV generator performance depends closely on the weather conditions, especially on solar irradiance. Besides, the partial shading effects still one of the most complicated problems that have a direct impact on the PV performance in terms of power output, multiple peaks exhibition on the power–voltage (P–V) characteristic curve, and hot-phenomena occurrence. In this paper, an efficient PV system structure has been proposed in order to enhance the performance of the PV generator under the partial shading effect. In such a way, the proposed PV structure will overcome mainly the following major partial shading effect problems: eliminating the local multiple peaks exhibition on the characteristic curve and increase the power output yield of the PV generator. On the other hand, the impact of hot-spot phenomena is reduced as well which leads to an increased in PV generator lifespan. On referring to the literature, many maximal power point tracking (MPPT) techniques have been developed in view to track the global maximal power point GMPP, alongside with proposing several PV configurations and arrangements to increase the power output yield and eliminate the local maximal power peaks (LMPPs). This paper intends to compare and discuss these techniques and configurations individually and by combining them in terms of effectiveness, complexity and cost ... etc. In which, this comparison ends up by selecting and proposing a suitable PV system structure that can mitigate the partial shading effect with high cost-effectiveness.



中文翻译:

局部遮光作用下提高光伏发电机性能的光伏系统结构新方法

PV 发电机的性能与天气条件密切相关,尤其是太阳辐照度。此外,局部遮蔽效应仍然是直接影响光伏性能的最复杂问题之一,包括功率输出、功率-电压(P-V)特性曲线上的多个峰值显示以及热现象的发生。本文提出了一种高效的光伏系统结构,以提高光伏发电机在部分遮蔽效应下的性能。这样,所提出的光伏结构将主要克服以下主要的局部遮蔽效应问题:消除特性曲线上的局部多峰,提高光伏发电机的发电量。另一方面,热点现象的影响也减少了,从而延长了光伏发电机的使用寿命。参考文献,为了跟踪全球最大功率点 GMPP,已经开发了许多最大功率点跟踪 (MPPT) 技术,同时提出了几种 PV 配置和安排,以提高功率输出产量并消除局部最大功率峰值(LMPP)。本文拟分别比较和讨论这些技术和配置,并通过在有效性、复杂性和成本等方面将它们组合起来。其中,这种比较最终通过选择和提出合适的光伏系统结构来缓解部分遮阳效果高,性价比高。许多最大功率点跟踪 (MPPT) 技术已经开发出来,以跟踪全球最大功率点 GMPP,同时提出了几种 PV 配置和安排,以提高功率输出产量并消除局部最大功率峰值 (LMPP)。本文拟分别比较和讨论这些技术和配置,并通过在有效性、复杂性和成本等方面将它们组合起来。其中,这种比较最终通过选择和提出合适的光伏系统结构来缓解部分遮阳效果高,性价比高。许多最大功率点跟踪 (MPPT) 技术已经开发出来,以跟踪全球最大功率点 GMPP,同时提出了几种 PV 配置和安排,以提高功率输出产量并消除局部最大功率峰值 (LMPP)。本文拟分别比较和讨论这些技术和配置,并通过在有效性、复杂性和成本等方面将它们组合起来。其中,这种比较最终通过选择和提出合适的光伏系统结构来缓解部分遮阳效果高,性价比高。

更新日期:2021-07-24
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