评估光伏系统在均匀和非均匀辐照下的输出功率

N. Shah, H. Patel
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引用次数: 1

摘要

光伏阵列中光伏组件的工作条件不均匀,特别是组件所受到的辐照水平不同,极大地影响了光伏系统的发电量。本文比较了提高并网光伏发电系统发电量的不同途径。一些常见的阵列配置、分布式最大功率点跟踪(DMPPT)水平、变换器类型及其增益的影响;研究了均匀和非均匀工况下光伏系统输出功率的影响。在各种方法的评估中,不是关注光伏阵列的输出功率,而是将向电网提供的功率和整体系统效率作为性能参数。在MATLAB/Simulink中进行了详尽的仿真研究,总结了高增益变换器相对于其他方法的优越性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluating the output power of a PV system under uniform and non-uniform irradiance
Non-uniform operating conditions for photovoltaic (PV) modules of the PV array, especially the different irradiation levels received by the modules, greatly affect the energy yield of the PV system. This paper compares different avenues by which the energy yield of grid-connected PV system can be increased. The effect of some common array configurations, the level of distributed maximum power point tracking (DMPPT), and the type of converters and their gain; on the output power of the PV system operating under uniform and non-uniform conditions are addressed. Rather than focusing on the output power of the PV array, the power supplied to the grid and the overall system- efficiency are considered as the performance parameters for evaluation of various approaches. The results of exhaustive simulation study performed in MATLAB/Simulink are reported as a summary to highlight the superiority of high-gain converters over other approaches.
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