摘要
光伏阵列中最大功率点跟踪广泛地采用基于滑模控制方式,但存在结构复杂、响应速度慢等缺点。基于此,提出一种扰动观察法与滑模控制法相结合控制最大功率点跟踪方法。该方案滑模面需要一条直线滑动线,该滑动线与光伏特性曲线在最大功率点处彼此交叉时,可以对其位置进行调整。升压斩波电路的切换模式受该直线滑动线直接影响,迫使光伏阵列工作点沿着光伏特性曲线和滑动线交叉点移动,从而光伏阵列将会产生最大功率。实验结果表明:该方法与已有的滑模控制相比较,具有设计结构简单、能够快速跟踪最大功率的特点。
The maximum power point tracking（MPPT） in photovaltaic（PV） array is based on sliding mode control,but it has the disadvantages of complex structure and slow response.Based on this,a method of maximum power point tracking combined the dis-turbance observation with the sliding control is proposed.In this scheme,this method needs a straight sliding-line and some adjust-ments on its location until a PV characteristic curve and this sliding line cross each other at the maximum power point（MPP）.The switching pattern of the boost converter is directly influenced by this straight line so that the PV operating point is compelled to move along an instant PV curve and onto the sliding line.Thereby the PV array will generate the maximum power.The experimental results show that the proposed method has the advantages of simple structure and fast tracking of the maximum power compared with the conventional control.
出处
《电子技术应用》
北大核心
2017年第8期136-139,143,共5页
Application of Electronic Technique
基金
安徽省高校人才重点项目(gxfx ZD2016077)
