光伏系统最大功率点跟踪算法的仿真研究  

Probe into Simulation of Maximum Power Point Tracking Algorithms for Photovoltaic System

作　　者：孙佳[1] 林永君[1] 王甜甜[1] 

机构地区：[1]华北电力大学控制与计算机工程学院,河北保定071003

出　　处：《陕西电力》2013年第9期29-32,共4页Shanxi Electric Power

基　　金：国家自然科学基金项目资助(61174111);中央高校基本科研业务费专项资金资助项目(09MG21)

摘　　要：通过研究光伏电池的数学模型,利用Matlab/Simulink环境建立了光伏电池的仿真模型,分析了光照、温度等因素对其输出特性的影响。分析了扰动观察法和常规电导增量法最大功率跟踪特性,针对其最大功率点跟踪动态和稳态性能不佳及启动过程较慢的问题,提出了一种变步长电导增量法,仿真验证了其在光照强度突变情况下具有较好的控制性能,提高了系统稳定性和能量转换效率。By studying the mathematical model of photovohaic cell, the paper establishes the simulation model of photovohaic system in Matlab/Simulink environment, and analyzes the influence of sun light and temperature on the output characteristic of the photovohaic cell. The perturbation and observation algorithm and normal incremental conductance algorithm is simulated in terms of maximum power tracking characteristics, and a variable step-size incremental conductance algorithm is proposed due to their poor performance in dynamic and steady state tracking and starting procedure. The simulation results show that the algorithm mentioned above has good control performance in the mutation of light intensity, and improves the stability of the system and the efficiency of energy conversion.

关 键 词：光伏电池 最大功率点跟踪 变步长 

分 类 号：TM615[电气工程—电力系统及自动化]