光伏电池单元最大功率点跟踪的直接检测法  

The direct detection method of the maximum power point tracking for PV cells

作　　者：唐文芳[1] 丁宣浩[1] 卢文全[2] 

机构地区：[1]桂林电子科技大学数学与计算科学学院,广西桂林541004 [2]中国电子科技集团第三十四研究所,广西桂林541004

出　　处：《可再生能源》2007年第6期6-9,共4页Renewable Energy Resources

基　　金：国家自然科学基金资助(10361003);广西省自然科学基金资助(0542046);广西研究生教育创新计划项目(006105950701M03)

摘　　要：最大功率点跟踪是提高光伏发电系统使用效率的有效途径之一,常用的跟踪方法都是根据电池输出的电压和电流值来寻求最大功率点的。文章提出了一种通过检测温度及光强的直接检测法,用求极值的方法直接得出光伏电池最大输出功率点及相应负载与温度和光照强度之间的数值关系,并与一组硅电池片参数进行了比较,其结果表明了该方法的可行性。The maximum power point tracking is one of the methods to improve the efficiency for PV Cells. The method of searching by itself which bases on voltage and current is commonly used. How the maximum power point for PV cells changes when the load resistance, the irradiation intensity and the temperature change is put forward in this paper by seeking the extremum. We can obtain the maximum output power so long as we matched the actual load to the corresponding result which was calculated by the method in this paper after examining the temperature and irradiation intensity. At last, the feasibility of the method depicted in this paper is proved by comparing the calculated results to the given ones.

关 键 词：光伏电池 最大功率点 负载 

分 类 号：TM615[电气工程—电力系统及自动化]