基于电压自寻优扰动的光伏MPPT算法  

Study on MPPT of self seeking optimal perturbation method

作　　者：王川川[1] 孙霞[1] 钱辉[1] 徐彦东 

机构地区：[1]安徽理工大学 [2]江苏省徐州市73682部队

出　　处：《电子技术应用》2016年第7期142-145,共4页Application of Electronic Technique

基　　金：安徽省淮南市科技计划项目(2014A1801);安徽省国家级大学生创新创业训练项目(201510361054)

摘　　要：首先介绍了光伏电池工作的基本原理,又在此基础上对传统的MPPT算法进行研究并做出了进一步改进,融合了恒定电压法与扰动观察法的优点,克服以往方法初始电压值给定不变的缺点,并结合了大步长扰动法和小步长扰动法,提出了一种改进的电压自寻优扰动观察法。通过Simulink仿真验证了该方法具有动态响应速度快,波形畸变率小,能提高系统的整体精度和稳定性的优点。In this paper,we first introduce the basic principle of photovoltaic cells and photovoltaic power generation system,and on this basis of traditional MPPT algorithm research and make further improvement,integration of the constant voltage method,per-turbation and observation method has the advantages of,overcome the defect of the given invariant the past the initial voltage val-ue,and a combination of long step perturbation method and the step length perturbation method,put forward a kind of improved self optimization of perturb and observe method.Through the Simulink simulation verify the the method with dynamic response speed,waveform distortion rate is small,and improve the accuracy and stability of the whole system.

关 键 词：光伏系统 最大功率点跟踪 变步长扰动 电压自寻优 

分 类 号：TM615.2[电气工程—电力系统及自动化]