摘要
对理论聚光比为676的菲涅耳聚光系统下单片砷化镓太阳电池及由六片砷化镓电池的串联组件的输出特性进行分析。建立三结砷化镓电池输出特性的单指数数学模型,并与实验进行了对比。理论计算与实验吻合较好,误差在7.6%以内。实验结果表明,在相同理论聚光比下,单片电池系统能流聚光比为390,六片电池组件系统能流聚光比为281;聚光后单片电池的短路电流与峰值功率分别放大322倍与316倍,六片电池组件系统的短路电流与峰值功率分别放大275倍与272倍;电池表面能流密度为0.321MW/m2时电池的输出功率达到最大,电池表面温度高于323K将影响其工作稳定性;聚光系统的透射率每增加0.01系统效率升高约0.227%。全天累积直射辐照度为17.212MJ/m2条件下测得单片电池全天发电量为0.015kW.h,六片电池串联组件的全天发电量为0.076kW.h。
The output characteristics on a GaAs solar cell and the components which are composed of six pieces of GaAs solar cells in concentration ratio 676 based on Fresnel concentrating system is analyzed. Single-index model of GaAs solar cell is established and compared with experiments. There is a good agreement of theory and experiments with the error less than 7.6 %. The experimental results indicate that, with the same concentration ratio, a GaAs solar ceil is in concentration ratio 390, and the six pieces of GaAs solar cells is in concentration ratio 281. The short- circuit current of the monolithic cell is enlarged 322 times, and the max electric power is enlarged 316 times in concentration which of the six pieces of GaAs solar cells system is enlarged 275 times and 272 times. The maximum power output of the solar cell is achieved when the energy-flux density is 0. 321 MW/m^2 The GaAs solar cell works well with a temperature lower than 323 K. The efficiency of the system increases 0. Z27 % as the transmittance of the system improve 0.01. The monolithic GaAs solar cell can generate electric energy 0. 015 kW.h and the the cell set of six pieces can generate electric energy 0. 076 kW.h for a clear day with daily direct irradiation of 17. 212 MJ/m^2.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2012年第7期198-204,共7页
Acta Optica Sinica
基金
国家自然科学基金(50966004
51106134)资助课题
关键词
光电子学
菲涅耳聚光光伏系统
砷化镓太阳电池
输出特性
辐照度
电池温度
optoelectronics
Fresnel concentrating photovoltaic system
GaAs solar cell
output characteristics,irradiance~ cell temperature
