基于变步长法的光伏发电系统最大功率点跟踪

光伏发电系统的最大功率点跟踪是提高发电效率的有效方式之一。文章提出改进的3阶变步长扰动算法实现最大功率点的跟踪,通过仿真对比了变步长和固定步长最大功率点跟踪的效果,结果表明改进后的变步长MPPT算法可以提高最大功率点跟踪的稳定性和效率,较改进前具有较大的优势。

The maximum power point tracking of photovoltaic power generation system is one of the effective ways to improve the efficiency of photovoltaic power generation.In this paper,an improved third-order variable step size disturbance algorithm is proposed to realize maximum power point tracking.The effects of variable step size and fixed step size maximum power point tracking are compared by simulation.The results show that the improved variable step size MPPT algorithm can improve the stability and efficiency of maximum power point tracking.