摘要
针对光伏发电系统中最大功率点跟踪问题,在太阳能电池的数学模型的基础上建立了PV模块的Matlab仿真模型;考虑到了太阳能的波动性和随机性对太阳电池阵列的影响,利用一种基于极值搜索方法的实时MPPT控制原理,控制Buck DC/DC变换电路,结合S函数在Matlab/Simulink环境下建立其动态仿真模型,实现了光伏电池输出的最大功率跟踪;仿真结果表明,该算法具有较好的动态特性和稳态特性,具有一定的实用价值。
The Maximum Power Point Tracking （MPPT） in photovoltaic （PV） power systems is important. In this paper by analyzing the physical model and electrical characteristic of solar cell a simple and practical simulation model is designed based on the Matlab software; Considering the solar fluctuation and randomness, a real--time MPPT system simulation model based on extremum --seeking control is introduced , which is realized using the Buck DC/DC converter. The control algorithm for the MPPT is realized by the S function. Also the article provides detail parameters for the design of the photovoltaic energy system. Simulation results demonstrate feasibility of the algorithm in steady state but also during transitory.
出处
《计算机测量与控制》
CSCD
北大核心
2009年第2期402-404,共3页
Computer Measurement &Control
关键词
光伏发电系统
最大功率点跟踪
极值搜索
算法
photovoltaie power generation system
MPPT
extremum-- seeking
algorithms
