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In this paper, we developed a test platform for open focusing photovoltaic devices with high times of points and high reliability.In this platform, we can accurately test the thermal and electrical characteristics of semiconductor III-V family of multi junction solar cells under high magnification.In addition, in this platform, we can also carry out the design of innovative concentrating photovoltaic modules, circuit system reliability test, IV test and so on.
Due to the temperature of the spot focusing photovoltaic power generation platform will be greatly improved in a short time, this paper designed and added temperature control clamp to operate.In addition, because the temperature of the battery can not be obtained by direct measurement of the specific value, this paper uses the experimental data and numerical calculation method to calculate the temperature of the battery.The design of the platform takes into account the characteristics of the point focusing solar cells, and uses the optical software to design a set of linear concentration photovoltaic system to realize its continuous variability.And select the appropriate power test range of current and voltage test equipment used to test the IV characteristic output curve of solar photovoltaic cells and other data parameters, at the same time to collect and analyze the light spot and other optical elements.In the experiment, we use the double layer lens instead of the single layer lens, which can make the spot to obtain a lower aberration and the concentration factor.
According to the design idea and build the high ratio of concentrating photovoltaic testing platform, according to the test results recorded concentrating ratio and beam density and other parameters. Record data and draw I-V characteristic curve and efficiency of solar cells under different light intensities were obtained based on the IV curve, open circuit voltage, short circuit current and maximum power point parameters and improved to achieve high-power light gathering photovoltaic test platform build.
Key words:Concentrating photovoltaic ；Point focusing ；Semiconductor III-V group three junction solar cell ；Test platform
目 录
摘 要 2
ABSTRACT 3
第一章 绪论 1
1.1太阳能光伏技术的诞生与发展 1
1.2光伏发电的战略地位及实施步骤 2
1.3聚光光伏技术的发展历史及分类 2
1.4聚光光伏技术的利用现状 3
1.5聚光光伏测试平台的研究意义 4
第二章 聚光型太阳能电池的测试方法 5
2.1太阳能电池的室内IV曲线测试 5
2.2传统晶体硅太阳能电池的测试 5
2.2.1晶体硅电池的测试流程 5
2.2.2绘制IV特性曲线光强及温度等参数的校正方法 6
2.3中高倍点聚光太阳能电池的测试 8
2.3.1中高倍点聚光太阳电池的测试流程 8
2.3.2中高倍点聚光太阳电池IV特性曲线的校正 9
第三章 中高倍数点聚光光伏器件测试平台设计 10
3.1聚光光伏测试平台总体设计方案 10
3.2聚光光伏测试平台核心部件设计 10
3.2.1太阳模拟器 10
3.2.2光功率计 12
3.2.3数字源表 13
3.2.4积分球与水冷机 13
3.2.5真空泵与透镜 14
3.2.6光学平台及位移台 15
3.2.7太阳能电池温度控制夹具 16
3.3光学系统的原理性分析与设计 16
3.3.1聚光的原理及光路分析 16
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