The effect of concentrated light intensity on output performance of solar cell arrays
The effect of concentrated light intensity on output performance of solar cell arrays
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DOI：
10.7498/aps.58.8067
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发表时间：
2009-11
期刊：
影响因子：
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通讯作者：
Xu Yongfeng;Li Ming;Wang Liu-ling;L. Wenxian;Zhang Xinghua;Xiang Ming;Wang Yunfeng;Wei Shengxian
中科院分区：
文献类型：
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作者：
Xu Yongfeng;Li Ming;Wang Liu-ling;L. Wenxian;Zhang Xinghua;Xiang Ming;Wang Yunfeng;Wei Shengxian
基于槽式聚光热电联供系统，深入分析晶硅电池阵列和砷化镓电池阵列在高倍聚光下的输出特性及输出功率的影响因素.结果表明，在聚光条件下，GaAs太阳电池阵列的输出性能优于晶体硅太阳电池阵列。在聚光条件下，太阳电池阵列的带隙变窄，短路电流增大，有利于输出功率的提高。但由于高光强下的耗尽区复合率较高，电池的开路电压略有下降，对输出功率有一定的限制作用。同时，由于聚光强度高，导致电池阵列的串联电阻增大，电池阵列的工作温度升高。在高聚光光强下，电池阵列的串联电阻对输出功率的影响很大。当串联电阻从0增加时，以槽式聚光光热系统为例，详细分析了晶体硅太阳电池阵列和砷化镓太阳电池阵列的输出特性和功率影响因素。结果表明，在聚光条件下，GaAs太阳电池阵列的输出性能优于晶体硅太阳电池阵列。在聚光条件下，太阳电池阵列的带隙变窄，短路电流增大，有利于输出功率的提高。但由于高光强下的耗尽区复合率较高，电池的开路电压略有下降，对输出功率有一定的限制作用。同时，由于聚光强度高，导致电池阵列的串联电阻增大，电池阵列的工作温度升高。在高聚光光强下，电池阵列的串联电阻对输出功率的影响很大。当串联电阻从0 Ω增加到1 Ω时，四个单元阵列的输出功率分别下降了67.78%、74.93%和58.01%。
Detailed analysis on the output characteristic and power influence factors of crystal silicon solar cell arrays and GaAs cell arrays have been done based on trough concentrating photovoltaic/thermal system. The results show that under concentrated light intensity, the output performance of GaAs cell array is better than crystal silicon solar cell arrays. Band-gap of solar cell arrays narrows and short circuit current increases very much in concentrated light intensity, which are good for output power. But open circuit voltage of cells drops a little for high recombination rate in depletion region produced by high light intensity, which has a restrictive effect to output power. At the same time the series resistance of cell arrays increases and working temperature of cell arrays rises which are brought about by high concentrated light intensity. In high concentrated light intensity, series resistance of cell arrays hugely affect the output power. When series resistance increases from 0 Detailed analysis on the output characteristic and power influence factors of crystal silicon solar cell arrays and GaAs cell arrays have been done based on trough concentrating photovoltaic/thermal system. The results show that under concentrated light intensity, the output performance of GaAs cell array is better than crystal silicon solar cell arrays. Band-gap of solar cell arrays narrows and short circuit current increases very much in concentrated light intensity, which are good for output power. But open circuit voltage of cells drops a little for high recombination rate in depletion region produced by high light intensity, which has a restrictive effect to output power. At the same time the series resistance of cell arrays increases and working temperature of cell arrays rises which are brought about by high concentrated light intensity. In high concentrated light intensity, series resistance of cell arrays hugely affect the output power. When series resistance increases from 0 Ω to 1 Ω, the out put power of four cell arrays respectively drop by 67.78%, 74.93% and 58.01%.