真实辐照度和温度条件下具有快速动态和稳态响应的光伏系统的增强P&O MPPT算法

IF 2.1 4区 工程技术 Q3 CHEMISTRY, PHYSICAL
Ambe Harrison, E. M. Nfah, Jean de Dieu Nguimfack Ndongmo, N. H. Alombah
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引用次数: 9

摘要

针对最大功率点跟踪系统中动态响应与稳态振荡之间的权衡问题,提出了一种改进的扰动观测方法。解决了必须牺牲动态响应或稳态振荡的约束。该方法利用分数开路电压(FOCV) MPPT方法的开路电压和最大功率电压之间的关系,建立一个有效的、简化的和受限的搜索空间,在该搜索空间内,通过动态自适应步长增强的P&O终止对最大功率点的搜索。通过与传统P&O算法的性能比较,验证了该方法的可行性。结果表明,该方法将光伏组件的工作效率提高到99.89%,跟踪时间缩短到1.8 ms,并保持了良好的稳态响应,在MATLAB环境下功率衰减小于0.10 W,相对衰减0.16%。利用实验装置收集了实际辐照度和温度数据,并用于实时模拟。增强型P&O方法能够有效地遵循最大功率点(MPP),从而能够抵抗辐照度和温度的突变。最后,为了了解所提出方法的优越性,将其与文献中19种不同的MPPT方法进行了比较。对比表明,增强型P&O MPPT方法对于光伏发电系统的MPPT是一种高效、有效的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An Enhanced P&O MPPT Algorithm for PV Systems with Fast Dynamic and Steady-State Response under Real Irradiance and Temperature Conditions
This paper presents an enhanced perturb and observe (P&O) method for reconciling the trade-off problem between the dynamic response and steady-state oscillations in maximum power point tracking (MPPT). The constraint of having to sacrifice either the dynamic response or the steady-state oscillations has been solved. The method uses the relationship between the open-circuit voltage and maximum power voltage from the fractional open-circuit voltage (FOCV) MPPT method to establish a valid, reduced, and confined search space within which an enhanced P&O via dynamic adaptive step size terminates the search for the maximum power point. The feasibility of the proposed method has been validated by comparing its performance with the conventional P&O algorithm. It was noted that the proposed method increased the operational efficiency of the PV module to 99.89%, reduced the tracking time to 1.8 ms, and preserved the good steady-state response with a power attenuation of less than 0.10 W or relative 0.16% under MATLAB environment. An experimental setup was used to collect real irradiance and temperature data which was used in real-time simulations. The enhanced P&O method was able to resist abrupt changes in irradiance and temperature as it effectively and efficiently followed the maximum power point (MPP). Finally, to appreciate the supremacy of the proposed method, it was compared to nineteen different MPPT methods from literature. The comparison showed that the enhanced P&O MPPT method is highly efficient and effective for MPPT in photovoltaic (PV) generation systems.
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来源期刊
CiteScore
6.00
自引率
3.10%
发文量
128
审稿时长
3.6 months
期刊介绍: International Journal of Photoenergy is a peer-reviewed, open access journal that publishes original research articles as well as review articles in all areas of photoenergy. The journal consolidates research activities in photochemistry and solar energy utilization into a single and unique forum for discussing and sharing knowledge. The journal covers the following topics and applications: - Photocatalysis - Photostability and Toxicity of Drugs and UV-Photoprotection - Solar Energy - Artificial Light Harvesting Systems - Photomedicine - Photo Nanosystems - Nano Tools for Solar Energy and Photochemistry - Solar Chemistry - Photochromism - Organic Light-Emitting Diodes - PV Systems - Nano Structured Solar Cells
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