光伏系统最大功率跟踪算法的研究

Research of Maximum Power Point Tracking Algorithm for Photovoltaic System Converter

针对传统光伏发电系统中最大功率点跟踪的问题和缺陷,文中提出了基于模糊控制的扰动观察法的方法,将模糊控制器应用于扰动观察法中。详细描述了模糊逻辑控制器的设计步骤,并且搭建了光伏发电系统的各个仿真模型。通过对比两种方法的仿真结果,得出了新方法具有较快的跟踪速度、能有效减小最大功率点附近振荡导致的功率损耗、且提升了系统效率的结论。

Aiming at the problems and defects of the maximum power point tracking in the traditional photovoltaic power generation system,a method based on fuzzy control is proposed.A detailed description of the design procedure of the fuzzy logic controller,and set up the simulation model of photovoltaic power generation system,through the comparison of the simulation results of the two methods,the result shows that the new method has faster tracking speed,can effectively reduce the oscillation near the maximum power point caused by power loss,and improve the efficiency of the system is the conclusion.