部分遮阳条件下光伏阵列输出功率优化的重构技术

A. M. Mohamed, S. Saafan, A. Attalla, H. Elgohary
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引用次数: 2

摘要

在部分遮阳条件下,光伏阵列暴露于光伏阵列输出功率损失等诸多问题,且光伏阵列具有多个最大功率点(MPP),这使得MPP难以跟踪。本文介绍了不同的部分遮阳模式对光伏阵列特性的影响以及对光伏阵列输出功率的影响,并对减轻这些影响的方法和这些方法的缺点进行了比较文献综述。提出了一种新的重构策略,在阴影条件下将光伏阵列的输出功率提高13.8%;提出了一种通过控制光伏阵列与自适应电池组之间的开关矩阵,在全光照条件下将光伏阵列的输出功率提高20%的新技术。针对该策略只产生一个MPP而难以跟踪的问题,给出了一种解决方案。利用MATLAB Simulink在不同的遮光模式下进行了仿真。引用本文:Mohamed, A. M., Saafan, S. M., Attalla, A. M., elgoharry, H.(2018)。部分遮阳条件下光伏阵列输出功率优化的重构技术。可再生能源发展趋势,4,111-124。DOI: 10.17737 / tre.2018.4.2.0068
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Reconfiguration technique for Optimization of the Photovoltaic array output power under partial shading conditions
A partial shading condition is a case under which the PV array is exposed to many problems such as losses of the output power of the PV array, and the PV array has more than one maximum power point (MPP), which makes it so difficult to track the MPP. This paper presents the effect of different partial shading patterns on PV array characteristics and the effect on the output power of the PV array, and provides a comparative literature review on methods to mitigate these effects and the drawbacks of these methods. It also proposed a new reconfiguration strategy that increases the output power of the PV array by 13.8 % from the total power under shadow condition, and a new technique for enhancing the output power of the PV array by 20 % of the total power under fully illumining conditions by controlling the switch matrix between the photovoltaic array and adaptive batteries bank. This paper gives a solution for the problem of the difficulty of tracking the MPP, because the proposed strategy makes only one MPP. The simulation was carried out by using MATLAB Simulink under different shading patterns. Citation:  Mohamed, A. M., Saafan, S. M., Attalla, A. M., and Elgohary, H. (2018). Reconfiguration technique for Optimization of the Photovoltaic array output power under partial shading conditions. Trends in Renewable Energy, 4, 111-124. DOI: 10.17737/tre.2018.4.2.0068
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