基于电流直接控制的光伏电池最大功率点跟踪策略

在传统的光伏系统最大功率点跟踪（MPPT）策略中，扰动观测法是检测系统的输入电压电流，计算其输入功率并使其达到最大。本文在分析了光伏电池特性及数学模型的基础上，提出了一种以系统输出电流最大为目标、不依赖光伏电池输出特性检测的最大功率点跟踪策略。最后，通过电流型光伏并网逆变器和光伏充电器的实验结果，该方案的可行性和正确性得到了验证。
Abstract: In conventional maximum power point tracking（MPPT）strategy of photovoltaic System , the disturbance observation
technology needs to measure the input voltage and current in order that the input power is maximized. With the analysis of
characteristic and mathematic model of photovoltaic cell , a MPPT strategy is proposed in this paper which aims at getting
maximum output current and doesn’t need to get the output characteristic of photovoltaic cell. The experiment results of a current
source PV grid-connected inverter and a PV charger verify the availability and correctness of the proposed method.
关键词：光伏系统，最大功率点跟踪，蓄电池充电
Keywords: photovoltaic system, Maximum power point tracking, Battery charging