光伏发电系统最大功率点跟踪方法研究

为准确跟踪光伏电池最大功率点,提高光伏电池的利用效率,分析了光伏电池等效模型及其输出特性,阐述了几种常用跟踪方法的原理及优缺点,并提出了基于电导增量法与Fibonacci搜索算法相结合的MPPT算法.仿真实验表明,该方法能在日照突变的情况下追踪最大功率点,并且使系统稳定工作在最大功率点,具有良好的抗干扰能力和较快的搜索速度,对光伏电池最大功率点有较好的追踪效果.

Research on MPPT method of photovoltaic power generation system

In order to accurately track the maximum power point of photovoltaic cell so as to enhance its utilization ratio, this paper analyzes the equivalent model of photovoltaic cell and its output characteristics, expounds the theo- ries and advantages and disadvantages of several tracking methods, and proposes a new MPPT algorithm based on the integration of conductance increment method and Fibonacci search algorithm. The simulation experiment shows that the algorithm, enjoying the great capability of anti-jamming and and quiche searching, has a good tracking effect of MPPT fro photovoltaic power generation point with the sudden change of sunlight and to point. system. It is a method which is able to track the maximum power guarantee the stable operation of system at the maximum power