基于自适应变步长因子的MPPT模糊控制
首发时间:2013-08-29
摘要:光伏电池的V-P特性具有强烈的非线性特性,最大功率点两侧的特性曲线坡度呈现出两异性,应用传统的定步长因子模糊控制进行最大功率点的跟踪控制往往存在跟踪控制慢、易振荡等弊端。为了获得快速稳定的跟踪效果,本文提出了一种能够实时跟随输出功率对输出电压偏导量(dP/dV)的自适应变步长因子的MPPT模糊控制算法。通过仿真验证,确立了该算法的准确性与可行性。
关键词: 电力电子与电气传动 自适应 模糊控制 最大功率点 变步长
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Fuzzy Control for MPPT Based on Adaptive Variable-step Factor
Abstract:V-P characteristic of photovoltaic cells have strong nonlinear characteristics and the curve slope on either side of maximum power point presents two opposite property. The maximum power point tracking control using traditional fixed-step factor fuzzy control often has some drawbacks. In order to achieve rapid and stable tracking effect, a new fuzzy control algorithm based on adaptive variable-step factor which can real-time track dP/dV is proposed and the feasibility and accuracy of this algorithm is verified after simulation.
Keywords: Power Electronics and Power Drives Adaptive Fuzzy Control MPPT Variable-step
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