基于最优梯度的光伏阵列多峰功率跟踪控制  

Multi-peak power tracking control of photovoltaic array based on optimal gradient

作　　者：李树鹏[1] 李振斌 刘亚丽[1] 邢楠楠 LI Shupeng;LI Zhenbin;LIU Yali;XING Nannan(Electric Power Science Research Institute of State Grid Tianjin Electric Power Company,Tianjin 300220,China)

机构地区：[1]国网天津市电力公司电力科学研究院,天津300220

出　　处：《电子设计工程》2025年第7期62-65,71,共5页Electronic Design Engineering

基　　金：国网天津电力科技项目(KJ23-1-64)。

摘　　要：针对光伏主机元件无法准确跟踪与控制功率信号的问题,设计基于最优梯度的光伏阵列多峰功率跟踪控制方法。按照最优梯度原则,确定光伏阵列组的实时排列顺序,求解电流与电压输出特性,分析光伏阵列电量特性;根据多峰电容的具体数值水平,实施光伏功率的等效转换,联合相关电量指标,计算跟踪控制参数,完成多峰功率跟踪控制。实验结果表明,规定60 min为单位电力周期时长,同一电力周期内只存在1个功率峰值,不会导致光伏阵列组织电量输出行为的梯度化差异分布,符合精准跟踪与控制功率信号的实际应用需求。To address the issue of photovoltaic host components being unable to accurately track and control power signals,a multi-peak power tracking control method for photovoltaic arrays based on optimal gradients is designed.According to the principle of optimal gradient,the real-time arrangement order of the photovoltaic array group is determined,the current and voltage output characteristics are solved,and the electrical characteristics of the photovoltaic array are analyzed;Based on the specific numerical level of multi peak capacitance,equivalent conversion of photovoltaic power was implemented,relevant electricity indicators were combined,tracking control parameters were calculated,and multi peak power tracking control was completed.The experimental results show that when a 60 minutes power cycle is specified,there is only one power peak within the same power cycle,which will not lead to a gradient difference distribution in the output behavior of the photovoltaic array organization.This meets the practical application requirements of precise tracking and control of power signals.

关 键 词：最优梯度 光伏阵列 多峰功率 电量特性 等效转换 

分 类 号：TN29[电子电信—物理电子学]