摘要
在局部阴影的条件下,由于光伏阵列的P-U曲线会存在多个峰值点,传统的扰动观测方法不能快速追踪到最大功率点。本文对粒子群算法的设计参数、执行流程等方面进行优化,提出了一种基于自适应粒子群算法对光伏并网系统MPPT的控制策略,最后进行了Matlab/Simulink仿真。结果表明,该控制策略可以快速、准确地搜寻到最大功率点,能够抑制复杂条件下环境因素的影响,提高算法的跟踪精度和光伏电池的整体工作效率。
For that there are multiple peak points in the P-U curve of the PV array under the condition of local shadow, the traditional disturbance observation method cannot quickly track the maximum power point problem.This paper optimizes the design parameters and execution flow of particle swarm optimization. A control strategy based on adaptive particle swarm optimization(PSO) algorithm in photovoltaic grid-connected system MPPT is proposed. Finally, Matlab/Simulink simulation and experimental research are carried out. The result shows that the control strategy can quickly and accurately find the maximum power point. The control strategy can suppress the influence of environmental factors under complex conditions, the tracking accuracy of the algorithm and the overall working efficiency of the photovoltaic cell are improved.
引文
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