一种改进的光伏系统最大功率控制算法  

An improved maximum power point tracking method for PV systems

作　　者：樊荣[1] 张秀霞[1,2] 张伶[1] 

机构地区：[1]北方民族大学电气信息与工程学院,宁夏银川750021 [2]西安交通大学电子信息工程学院,陕西西安710049

出　　处：《广西大学学报（自然科学版）》2015年第3期667-672,共6页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(51365001);北方民族大学校级科研项目(2011Y029)

摘　　要：为了提高太阳能发电效率,提出了一种新的太阳能最大功率跟踪方法。该改进算法由扰动观察法和二次插值法相结合进行最大功率点跟踪,利用二次插值法可以缩小搜索范围的特点,克服了扰动观察法在最大功率点附近产生的震荡现象,从而减小误判。通过MATLAB建模仿真的结果表明,改进算法能够快速地搜索到最大功率点,提高太阳能发电系统的稳定性。In order to improve the efficiency of solar power systems, an improved maximum power point tracking method for PV systems is proposed. The maximum power point （ MPP） is tracked by perturbation and observation algorithms and quadratic interpolation method. Based on perturbation and observation algorithm as well as the quadratic interpolation method which is introduced to narrow the scope of MPP, the improved method could avoid shock phenomenon of perturbation and observation al-gorithms near the maximum power point. The improved system is simulated by Matlab,and the simula-tion results show the proposed method can search the maximum power point effectively and state the steady performance of the PV power systems.

关 键 词：光伏发电系统 最大功率 二次插值法 

分 类 号：TM614[电气工程—电力系统及自动化] TM615