太阳能电池最大功率点跟踪技术研究

在太阳能LED路灯照明系统中,为了提高系统的整体效率,应实时检测太阳能电池的输出功率,保证太阳能电池始终工作在最大功率点上。文中介绍了太阳能电池的输出特性和最大功率点跟踪的原理,分析了常用的固定电压法、扰动观察法、电导增量法等跟踪方法。并针对传统算法中存在的跟踪速度慢、振荡现象等问题,提出了一种新的算法,将固定电压法和扰动观察法结合起来,利用两者各自的优势,实现快速跟踪,进一步提高太阳能电池的利用效率。

Research on Solar Maximum Power Point Tracking Technology

In order to improve the efficiency of the solar LED Lighting system,it is important to detect the solar battery output power in real time and ensure the solar battery always works at the maximum power point.This paper briefly describes the output characteristic of the solar battery and the principles of tracking maximum power point,and analyzes several tracking methods,i.e.the constant voltage algorithm,the perturb-observe algorithm and the conductance increment algorithm.And an improved algorithm that combines the constant voltage algorithm and perturb-observe algorithm is put forward to solve the problems of slow tracking,oscillating phenomenon,etc.by traditional methods.It makes good use of their respective advantages to achieve fast tracking and further improve the utilization efficiency of solar battery.