光伏阵列多峰最大功率点分布特点研究  

Multi-peak MPP distribution of photovoltaic array

作　　者：戚军[1] 翁国庆[1] 章旌红[1] 

机构地区：[1]浙江工业大学信息工程学院,浙江杭州310023

出　　处：《电力自动化设备》2014年第3期132-137,143,共7页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51207139);浙江省自然科学基金资助项目(LQ13E070004);浙江省自然科学基金重点资助项目(Z1110893)~~

摘　　要：基于光伏阵列的通用数学模型,借助计算机仿真和统计分析技术,对局部阴影条件下光伏阵列的输出特性进行了研究。统计分析结果表明,多峰功率-电压(P-U)特性曲线上相邻最大功率点(MPP)的电压间距较大,而且大部分案例中全局MPP位于电压轴右半边;全局MPP两侧的局部MPP功率呈单调递减趋势的概率较大;负载线与电流-电压(I-U)特性曲线的交点与全局MPP山峰有密切联系。根据统计分析结果,总结了多峰最大功率点跟踪(MPPT)算法设计时可借鉴的经验。With the help of computer simulation and statistical analysis,the characteristics of photovoltaic array output under partial shade are studied based on its general mathematical model.Results of statistical analysis reveal that,the voltage interval between adjacent MPPs（Maximum Power Points） in multi-peak P-U curve is bigger and most of the global MPPs lie at the right side of voltage axis in most cases;it has bigger probability that the power of local MPPs at both sides of global MPP decreases monotonously;the intersection of load line and I-U curve is closely associated with the global MPP.Experiences are summarized based on the results of statistical analysis for the design of multi-peak MPPT algorithm.

关 键 词：光伏阵列 光伏电池 局部阴影 多峰特性 最大功率点 最大功率点跟踪 统计方法 仿真 

分 类 号：TM615[电气工程—电力系统及自动化]