改进扰动观察法的光伏阵列最大功率点跟踪算法  

An improved perturbation and observation method of photovoltaic array maximum power point tracking

作　　者：李涛[1] 霍修坤[1] 张道忠[1] 张伟[1] 

机构地区：[1]安徽大学电子工程学院,安徽合肥230039

出　　处：《微型机与应用》2013年第10期73-76,共4页Microcomputer & Its Applications

基　　金：安徽省自然科学研究项目(KJ2011A023)

摘　　要：为了更好地跟踪光伏阵列的最大功率点,分析单个光伏电池的物理特性,建立光伏阵列的Matlab仿真模型,分析光伏阵列随光照温度不同而变化的P-U、U-I特性。针对系统在工作工况发生变化时跟踪情况的不同,对传统的扰动观察法做了变步长的寻优算法,并结合调整策略搭建光伏系统最大功率点跟踪的仿真实验模型。结果表明该算法可以快速准确地跟踪最大功率点,稳态效果好,能够更好地提高光伏发电最大功率点跟踪系统的跟踪性能。Photovoltaic array simulation can be used to find better methods to track the maximum power point. In this paper, we analyse the physical characteristics of the individual solar ceils and establish a matlab simulation model of the solar photovohaic array, and analyze P-U ,U-I characteristic for any insolation level and ambient temperature. The system change tracking situation in different working condition, We propose a changing step optimizing algorithm based on perturbation and observation（P＆O） method and construct the MPPT model with adjustment strategy. Simulation analysis experiment has been conducted, the result shows that the proposed algorithm can track the max power point quickly and stably.It make the tracking performance of photovoltaic maximum power point tracking system better.

关 键 词：光伏阵列 扰动观察法 最大功率点跟踪 变步长 

分 类 号：TM743[电气工程—电力系统及自动化]