基于Fibonacci算法的最大功率追踪法研究

提出一种基于Fibonacci搜索算法的光伏发电系统最大功率跟踪(MPPT)方法,它能在部分遮蔽条件下或日照突变情况下,通过简单有效的控制来跟踪实际的最大功率点。Fibonacci搜索算法经修改后,适用于时变的光伏组件的P-V特性。实验中用DSP实现最大功率跟踪(MPPT)算法,通过改变光伏组件表面的受光面积模拟自然界的光照变化。结果证明,该算法工作可靠,即使在部分遮蔽条件下也有较快的响应速度和较高的准确性。

A novel Maximum Power Point Tracking Method based on Fibonacci Algorithm

A novel strategy of maximum power point tracking (MPPT) for photovoltaic (PV) power generation systems based on Fibonacci search algorithm is presented to realize simple control system to track the real maximum power point even under non-uniform or for rapidly changing insolation conditions.The Fibonacci search technique was modified in order to apply to time-variant P-V characteristics of the PV array.The experimental and simulative results prove that the algorithm has good performances and very fast response even for partial shaded PV modules.DSP was used to realize MPPT control.Experiment has been done to simulate the changes of insolation.Results are presented to prove the feasibility of the proposed technique.