Abstract

To reduce the efficiency reduction caused by non-uniformity of illumination, a dense-array module with non-uniform sizing of photovoltaic (PV) cells is proposed for dish-type concentrating PV systems. The non-uniform-sized dense-array module has been designed and analyzed theoretically at the ideal irradiance of Gaussian distribution, which consists of 48 silicone solar cells. Using the ZEMAX optical simulation software, the realistic distribution of the Gaussian-like facula on the PV module has been modelled in a dish-type concentrator system. The experiments are done under the conditions of different alignments to imitate the different two-axis tracking accuracy with or without a homogenizer. Besides, the performances of dense-array modules with the classical uniform-sized and the proposed non-uniform-sized PV cells are analyzed under various illumination distributions using ZEMAX, respectively. Results show that when the deviation angle of tracking is 0, 0.02, 0.2, the photoelectric conversion efficiency and output power of the proposed non-uniform size dense-array module considerably exceeds the traditional uniform size module. Furthermore, when the tracking deviation angle is no more than 0.02°, it is a very definite possibility that the dish-type concentrator system with non-uniform-sized dense-array module need not a homogenizer as a secondary optical element, which may hence simplify the system structure.

中文翻译：

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密集阵列模块中PV电池的尺寸不均匀，以匹配碟型CPV系统中的不均匀照明

摘要

为了减少由照明不均匀引起的效率降低，提出了用于碟形聚光PV系统的具有不均匀尺寸的光伏（PV）电池的密集阵列模块。理论上，非均匀尺寸的密集阵列模块是在理想的高斯分布辐照度下设计和分析的，该模块由48个有机硅太阳能电池组成。使用ZEMAX光学仿真软件，已经在碟型集中器系统中对高斯型光斑在PV模块上的实际分布进行了建模。在不同对准的条件下进行实验，以模拟有或没有均质器的不同两轴跟踪精度。除了，分别使用ZEMAX在各种照明分布下分析了具有经典均一尺寸和拟议非均一尺寸PV电池的致密阵列模块的性能。结果表明，当跟踪偏离角为0、0.02、0.2时，提出的非均匀尺寸致密阵列模块的光电转换效率和输出功率大大超过了传统的均匀尺寸模块。此外，当跟踪偏离角不大于0.02°时，非常确定的可能性是具有不均匀尺寸的密集阵列模块的碟型聚光器系统不需要均质器作为二次光学元件，因此可能会简化系统结构。提出的非均匀尺寸致密阵列模块的光电转换效率和输出功率大大超过了传统的均匀尺寸模块。此外，当跟踪偏离角不大于0.02°时，非常确定的可能性是具有不均匀尺寸的密集阵列模块的碟型聚光器系统不需要均质器作为二次光学元件，因此可能会简化系统结构。提出的非均匀尺寸致密阵列模块的光电转换效率和输出功率大大超过了传统的均匀尺寸模块。此外，当跟踪偏离角不大于0.02°时，非常确定的可能性是具有不均匀尺寸的密集阵列模块的碟型聚光器系统不需要均质器作为二次光学元件，因此可能会简化系统结构。