透镜与电池间距对聚光光伏系统特性影响的实验研究  

Experimental investigation on the performance of concentrating photovoltaic system influenced by the distance between Fresnel lens and cell

作　　者：肖文波[1] 何兴道[1] 王庆[1] 赖相霖[1] 黄苏华[1] 

机构地区：[1]南昌航空大学无损检测技术教育部重点实验室,江西南昌330063

出　　处：《光电子．激光》2012年第6期1039-1042,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(10904059;41066001;61177096);航空科学基金(2010ZB56004);江西省教育厅基金(GJJ11176);无损检测技术教育部重点实验室开放基金(ZD201029005)资助项目

摘　　要：实验研究了聚光太阳电池上光照强度、短路电流、开路电压、电池温度和光电转换效率随菲涅耳透镜与电池的距离变化关系。结果表明,聚光条件下,太阳电池性能的提高主要源于短路电流的变化,而不是开路电压;聚光后,太阳电池与透镜距离为焦长时,输出功率可以达到最大值;太阳电池的最大单位光强转换效率需要把太阳电池放到透镜焦点前。本文研究结果对于聚光光伏系统的研制具有指导意义。The dependences of light intensity,open-circuit voltage,short circuit current and cell′s temperature on the distance between the Fresnel lens and solar cell are investigated in concentrating photovoltaic system.The results show that the efficiency increase of concentrating photovoltaic system mainly results from the improvement of the short-circuit current,but not from the open-circuit voltage.It is found that the output power of solar cell can achieve maximum when the cell is placed at the focal point of the Fresnel lens.But the maximum efficiency of a concentrating photovoltaic cell per unit of light intensity can be obtained only when the cell is placed before the lens focus.It is of great guiding significance for the design and research of the current photovoltaic systems.

关 键 词：聚光光伏系统 开路电压 短路电流 电池温度 光电转化率 

分 类 号：TK513[动力工程及工程热物理—热能工程]