采用自适应扰动观察法的光伏并网系统最大功率点跟踪 |
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引用本文: | 谢 维,饶国勇,蔡建羨,李立新,陈 逊.采用自适应扰动观察法的光伏并网系统最大功率点跟踪[J].计算机测量与控制,2019,27(5):207-211. |
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作者姓名: | 谢 维 饶国勇 蔡建羨 李立新 陈 逊 |
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作者单位: | 防灾科技学院电子科学与控制工程学院,河北三河,065201;景德镇学院,江西景德镇,333000 |
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摘 要: | 提出了一种自适应扰动观察(P&O)算法,用于在不同天气条件下太阳能光伏(PV)并网系统的最大功率点跟踪(MPPT)控制策略。该策略对于从太阳能光伏电池板中,获取最大的功率输出是十分重要的。利用一种依赖于功率变化的可变的扰动步长,提出了改进的自适应扰动观察算法。最后将通过仿真所得到的数据与传统的扰动观察算法进行了比较,结果表明所提出MPPT算法的收敛值和速度得到了改善,稳定时间缩短25%,稳态值提高20%以上,在太阳能光伏并网系统的最大功率点跟踪时是有效而实用的。
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关 键 词: | 最大功率点跟踪 扰动观察算法 太阳能光伏并网系统 |
收稿时间: | 2018/12/4 0:00:00 |
修稿时间: | 2018/12/7 0:00:00 |
Maximum Power Point Tracking Using Adaptive Perturbation and Observation Algorithm for Grid-connected Photovoltaic System |
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Abstract: | This paper proposes an adaptive perturbation and observation (P&O) algorithm for maximum power point tracking (MPPT) control strategy of a grid-connected solar photovoltaic (PV) system under varying atmospheric conditions. This strategy is important in order to extract maximum power output from a solar PV panel. The adaptive P&O algorithm is proposed to utilize a variable perturbation step size which depends on power changes. The obtained simulation results are compared with those using the conventional P&O algorithm, which show the convergence value and speed of the proposed MPPT algorithm are improved. The steady time is shortened by 25%, and the steady-state value is increased by more than 20%.So the proposed algorithm is effective and practical in the MPPT of a grid-connected solar PV system. |
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Keywords: | maximum power point tracking perturbation and observation algorithm grid-connected solar photovoltaic system |
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