基于改进滞环比较法的光伏阵列MPPT  

Photovoltaic Array Maximum Power Point Tracking Based on Improved Hysteresis Comparison Method

作　　者：沈旦立[1,2] 李振璧[1] 皇淼淼[1] 曹金虎[2] 

机构地区：[1]安徽理工大学,安徽淮南232001 [2]阳光电源股份有限公司,安徽合肥230088

出　　处：《电力电子技术》2012年第9期4-6,15,共4页Power Electronics

摘　　要：常规的定步长滞环比较法具有可较大程度避免振荡和误判现象的特点,在光伏阵列的最大功率点跟踪(MPPT)系统中具有广阔的应用前景,然而常规定步长滞环比较法难以获得较高的稳态跟踪精度。提出了一种变步长滞环比较法,并且结合常规的定步长滞环比较法和扰动观测法进行了对比实验,实验结果证明了该方法的有效性。The conventional fixed-step hysteresis comparison method is widely used in the photovohaic array maximum power point tracking（MPPT） system due to a large extent avoid oscillation and the characteristics of the phenomenon of false positives.However,the conventional fixed-step method of hysteresis is difficult to obtain a high steady-state tracking accuracy.This paper presents a variable step size of the hysteresis comparison method, combined with the conventional fixed step size of the hysteresis comparison method and perturbation and observation method for comparative experiment, the experimental results demonstrate the effectiveness of the method.

关 键 词：光伏阵列 最大功率点跟踪 滞环比较法 

分 类 号：TM615[电气工程—电力系统及自动化]