非均匀激光照射下光伏电池组合方式对输出特性的影响

发布时间：2018-01-18 11:17

本文关键词：非均匀激光照射下光伏电池组合方式对输出特性的影响　出处：《半导体光电》2017年06期 　论文类型：期刊论文

【摘要】：为了探索光强均匀性对光电池组件整体光电转换效率的影响,采用波长为808nm、输出光强可调的半导体激光束照射两片单结砷化镓电池,实验测量光电池在串联、并联组合方式下不同光功率密度激光照射时的输出特性,结果表明,当照射到两光电池上的激光功率密度相同时,两种连接方式下组件的光电转换效率基本相同,都在46%左右;当照射到两光电池上的激光功率密度不同时,串联方式下组件的光电转换效率低于并联时的效率。该结果可由光电池的等效电路理论得到解释。因此,在光强分布复杂的情况下,对光电池的组合方式进行合理选择,可以有效地保证光伏组件整体的光电转换效率。
[Abstract]:In order to explore the effect of light intensity uniformity on the overall photoelectric conversion efficiency of the photocell module, two single-junction GaAs cells were irradiated by a semiconductor laser beam with a wavelength of 808 nm and adjustable output light intensity. The output characteristics of the photovoltaic cells irradiated by laser with different optical power density in series and parallel connection were measured experimentally. The results show that the laser power density of the two photovoltaic cells is the same when the laser power density is the same. The photoelectric conversion efficiency of the two kinds of connection modes is basically the same, which is about 46%; When the laser power density of the two photovoltaic cells is different, the photoelectric conversion efficiency of the module in series mode is lower than that of the parallel mode. This result can be explained by the equivalent circuit theory of the photocell. In the case of complex light intensity distribution, the optoelectronic conversion efficiency of the whole photovoltaic module can be effectively guaranteed by reasonably selecting the combination of photovoltaic cells.
【作者单位】：南京航空航天大学理学院;常州大学江苏省光伏科学与工程协同创新中心;
【基金】：国家自然科学基金项目(51577091,51377080)
【分类号】：TM914.4
【正文快照】： 0引言激光因其具有单色性好、方向性好和能量集中的特点,可将能量以激光形式在自由空间远距离传输后,照射到配有光电转换组件的用电负载上,为其提供电能。因此基于以激光为能量传送载体的激光无线电能传输技术,有望在微型飞行器、卫星和空间探测器等移动用电设备的电能供应中

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