基于SIMULINK仿真的太阳能光伏系统最大功率点跟踪

Solar photovoltaic maximum power point tracking system based on SIMULINK simulation

在光伏发电系统中,最大功率点跟踪(MPPT)方法是提高系统效率的重要手段。在光伏电池仿真模型及其输出特性的基础上,介绍了最大功率点跟踪的原理和几种常见的实现方法。考虑到太阳能发电系统本身具有很强的非线性即易受外界因素影响的特性,将改进的干扰观测法的最大功率点跟踪算法应用于STP250S—20型独立光伏系统,并利用MATLAB/SIMULINK进行仿真,模拟最大功率点跟踪控制。通过将改进算法的仿真结果与传统干扰观测法进行比较,证明了改进算法的优越性。

In the photovoltaic power generation systems, Maximum Power Point Tracking （MPPT） method is an important way to im- prove the efficiency. It introduced the principle of maximum power point tracking and several commonly used methods in addition to the simulation model and its output characteristics. Because of the strong nonlinearity of the solar photovoltaic system, which is that it is very vulnerable to external ~aetors, we applied the improved algorithm MPPT to a stand-alone pv system STP250S--20, by using MATLAB/SIMULINK simulation, the improved algorithms simulated the maximum power point tracking control. And by comparing the improved algorithm simulation results with traditional disturbance observation method, it proved the superiority of the improved algorithm.