摘要
光伏发电系统中光伏电池的输出特性易受到外界环境因素的影响,为了提高光伏阵列的效率则采用最大功率点跟踪控制。针对传统的扰动观察法跟踪步长固定和振荡幅度大的问题,在传统扰动观察法的基础上提出了改进的变步长自适应算法。在MATLAB/Simulink模块中,在不同光照强度的情况下对两种算法进行仿真分析,结果显示改进后的算法跟踪速度更快且系统工作状态更稳定。
The output characteristics of photovoltaic cells in photovoltaic power generation systems are easily affected by external environmental factors.In order to improve the efficiency of the photovoltaic array,the maximum power point tracking control is adopted.Aiming at the problem of fixed tracking step length and large oscillation amplitude in the traditional disturbance observation method,an improved variable step size adaptive algorithm is proposed on the basis of the traditional disturbance observation method.In the MATLAB/Simulink module,the two algorithms are simulated and analyzed under different light intensities.The results show that the improved algorithm tracking speed is faster and the system working state is more stable.
作者
吴振奎
沈琦
张祎文
陈超
WU Zhenkui;SHEN Qi;ZHANG Yiwen;CHEN Chao(Inner Mongolia Key Laboratory of Solar Thermal and Wind Power Generation,College of Information Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,China)
出处
《电工技术》
2021年第16期56-58,63,共4页
Electric Engineering
关键词
光伏发电系统
最大功率点跟踪
扰动观察法
变步长自适
photovoltaic power generation systems
maximum power point tracking
perturbation observation method
variable step size adaptive
