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An Improved MPPT Algorithm for PV Generation Applications Based on P-U Curve Reconstitution

机译：基于P-U曲线重构的光伏发电应用MPPT改进算法

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摘要

The output power of PV array changes with the variation of environmental factors, such as temperature and solar irradiation. Therefore, a maximum power point (MPP) tracking (MPPT) algorithm is essential for the photovoltaic generation system. However, the P-U curve changes dynamically with the variation of the environmental factors; here, the misjudgment may occur if a simple perturb-and-observe (P&O) MPPT algorithm is used. In order to solve this problem, this paper takes MPPT as the main research object, and an improved MPPT algorithm for PV generation applications based on P-U curve reconstitution is proposed. Firstly, the mathematical model of PV array is presented, and then the output dynamic characteristics are analyzed. Based on this, a P-U curve reconstitution strategy is introduced, and the improved MPPT algorithm is proposed. At last, simulation and comparative analysis are conducted. Results show that, with the proposed algorithm, MPP is tracked accurately, and the misjudgment problem is solved effectively.
机译：光伏阵列的输出功率随温度和太阳辐射等环境因素的变化而变化。因此，最大功率点（MPP）跟踪（MPPT）算法对于光伏发电系统至关重要。但是，P-U曲线随环境因素的变化而动态变化。在这里，如果使用简单的扰动观察（P＆O）MPPT算法，则可能会产生误判。为了解决这一问题，本文以MPPT为主要研究对象，提出了一种基于P-U曲线重构的改进的光伏发电应用MPPT算法。首先给出了光伏阵列的数学模型，然后分析了输出动态特性。在此基础上，提出了一种P-U曲线重构策略，并提出了改进的MPPT算法。最后进行了仿真和对比分析。结果表明，该算法能够准确跟踪MPP，有效解决了误判问题。

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  • 来源
    《Journal of control science and engineering》 |2016年第1期|3242069.1-3242069.10|共10页
  • 作者

    Yaoqiang Wang; Meiling Zhang; Xian Cheng;

  • 作者单位

    School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China;

    School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China;

    School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China;

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