基于改进滑模控制的光伏系统最大功率跟踪

Maximum Power Tracking of Photovoltaic System Based on Improved Sliding Mode Control

最大功率跟踪控制算法是光伏发电系统中重要的研究对象之一,但是跟踪速度和跟踪精度之间的矛盾一直是研究重点。在分析了各种控制算法优缺点的基础上,结合扰动观测法提出了一种改进的滑模控制,并通过Simulink仿真和实验证明了该算法在跟踪速度和跟踪精度上的优势,为光伏系统最大功率跟踪提出了一种新思路。

Maximum power tracking control algorithm is one of the most important research objects in the photovoltaic power systems,but the contradiction between the tracking speed and tracking precision has been the focus of the study.Based on analysis of the advantages and disadvantages of various control algorithms,an improved sliding mode control is proposed combining with the disturbance observation method.Simulink simulation and experiment demonstrate the advantages of the improved algorithm in tracking speed and tracking accuracy,and provide a new idea for the maximum power tracking.