Comparative study of maximum power point tracking algorithms
Comparative study of maximum power point tracking algorithms
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DOI：
10.1002/pip.459
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发表时间：
2003-01-01
影响因子：
6.7
通讯作者：
Ropp, ME
中科院分区：
文献类型：
--
作者：
Hohm, DP;Ropp, ME
最大功率点跟踪器 (MPPT) 在光伏 (PV) 电力系统中发挥着重要作用，因为它们可以在给定的条件下最大化光伏系统的功率输出，从而最大化阵列效率。因此，MPPT 可以最大限度地降低总体系统成本。 MPPT 使用 MPPT 算法找到并维持在最大功率点的运行。已经提出了许多这样的算法。然而，一种特殊的算法，即扰动观察 (P&O) 方法，许多文献中声称其性能不如其他算法，但它仍然是迄今为止商业光伏 MPPT 中使用最广泛的方法。部分原因是已发布的方法之间的比较不包括所有算法均经过优化的多种算法与标准化 MPPT 硬件之间的实验比较。本文提供了这样的比较。 MPPT 算法性能通过 MPPT 效率来量化。在这项工作中，使用从光伏阵列运行的微处理器控制的 MPPT 以及光伏阵列模拟器，获得了三种优化算法的结果。研究发现，经过适当优化，P&O 方法的 MPPT 效率可以远超 97%，与其他 MPPT 算法相比具有很强的竞争力。版权所有 (C) 2002 John Wiley Sons, Ltd.
Maximum power point trackers (MPPTs) play an important role in photovoltaic (PV) power systems because they maximize the power output from a PV system for a given set of conditions, and therefore maximize the array efficiency. Thus, an MPPT can minimize the overall system cost. MPPTs find and maintain operation at the maximum power point, using an MPPT algorithm. Many such algorithms have been proposed. However, one particular algorithm, the perturb-and-observe (P&O) method, claimed by many in the literature to be inferior to others, continues to be by far the most widely used method in commercial PV MPPTs. Part of the reason for this is that the published comparisons between methods do not include an experimental comparison between multiple algorithms with all algorithms optimized and a standardized MPPT hardware. This paper provides such a comparison. MPPT algorithm performance is quantified through the MPPT efficiency. In this work, results are obtained for three optimized algorithms, using a microprocessor-controlled MPPT operating from a PV array and also a PV array simulator. It is found that the P&O method, when properly optimized, can have MPPT efficiencies well in excess of 97%, and is highly competitive against other MPPT algorithms. Copyright (C) 2002 John Wiley Sons, Ltd.