Assessment of Perturb and Observe MPPT Algorithm Implementation Techniques for PV Pumping Applications
Assessment of Perturb and Observe MPPT Algorithm Implementation Techniques for PV Pumping Applications
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DOI：
10.1109/tste.2011.2168245
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发表时间：
2012-01-01
影响因子：
8.8
通讯作者：
Atkinson, David J.
中科院分区：
文献类型：
--
作者：
Elgendy, Mohammed A.;Zahawi, Bashar;Atkinson, David J.
采用简单的扰动观测（P&O）最大功率点跟踪算法可以显著提高商用光伏水泵系统的能量利用效率。两个这样的P&O实现技术，参考电压扰动和直接占空比扰动，通常在文献中使用，但没有明确的标准，适当的选择方法或算法参数已被提出。本文提出了一个详细的理论和实验比较的基础上，独立的光伏水泵系统的系统稳定性，性能特点和能源利用率的两个P&O实施技术。研究了算法参数对系统行为的影响，并针对不同的天气条件确定了每种技术的各种优点和缺点。使用1080-Wp光伏阵列连接到1千瓦的永磁直流电机离心泵组得到的实际结果表明与理论分析和数值模拟非常吻合。
The energy utilization efficiency of commercial photovoltaic (PV) pumping systems can be significantly improved by employing simple perturb and observe (P&O) maximum power point tracking algorithms. Two such P&O implementation techniques, reference voltage perturbation and direct duty ratio perturbation, are commonly utilized in the literature but no clear criteria for the suitable choice of method or algorithm parameters have been presented. This paper presents a detailed theoretical and experimental comparison of the two P&O implementation techniques on the basis of system stability, performance characteristics, and energy utilization for standalone PV pumping systems. The influence of algorithm parameters on system behavior is investigated and the various advantages and drawbacks of each technique are identified for different weather conditions. Practical results obtained using a 1080-Wp PV array connected to a 1-kW permanent magnet dc motor-centrifugal pump set show very good agreement with the theoretical analysis and numerical simulations.