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首页> 外文期刊>Measurement Science & Technology >Indoor measurement of photovoltaic device characteristics at varying irradiance, temperature and spectrum for energy rating
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Indoor measurement of photovoltaic device characteristics at varying irradiance, temperature and spectrum for energy rating

机译：室内测量在变化的辐照度，温度和光谱下的光伏器件特性，以进行能量评级

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The first three-dimensional performance matrix for use in photovoltaic (PV) energy rating is reported utilizing a novel energy rating solar simulator based on LEDs. Device characteristics are measured indoors at varying irradiance (G), temperature (T) and spectrum (E). This opens the possibility for a more accurate measurement system for energy yield prediction of PV devices, especially for devices with high spectral dependence such as wide bandgap solar cells as they take into account spectral changes in the light. The main aspects of the LED-based solar simulator used are briefly described. A measurement method is developed and detailed in the paper, which takes into account the current imperfections in the achievable spectrum. Measurement results for a crystalline silicon solar cell are used to demonstrate the measurement approach. An uncertainty analysis of the measurement system is given, resulting in an overall absolute uncertainty of 4.3percent (coverage factor k velence 2) in maximum power measurements at 765 W m~(-2) irradiance with scope for further improvements.
机译：据报道，利用基于LED的新型能效太阳能模拟器，用于光伏（PV）能效等级的第一个三维性能矩阵。在室内在变化的辐照度（G），温度（T）和光谱（E）下测量设备特性。这为光伏装置的能量产量预测提供了一种更精确的测量系统的可能性，尤其是对于光谱依赖性较高的装置（例如宽带隙太阳能电池），因为它们考虑了光的光谱变化。简要介绍了所使用的基于LED的太阳能模拟器的主要方面。本文中开发并详细介绍了一种测量方法，该方法考虑了可实现频谱中的当前缺陷。晶体硅太阳能电池的测量结果用于演示测量方法。给出了测量系统的不确定性分析，结果表明在765 W m〜（-2）辐照度下的最大功率测量中，总的绝对不确定度为4.3％（覆盖系数k velence 2），还有进一步改进的范围。

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