中文摘要：

为了研究柔性非晶硅薄膜太阳能电池（a-Si PV）在晴和多云天气下的温度值,基于能量守恒法建立了a-Si PV的光热模型,考察了各部分参数取值,编写了微分方程的求解程序,并设计研制了一套实验模型进行验证.实验结果表明：a-Si PV电池的温度受日照辐射强度的影响最为显著;安装角度和环境温度也在一定程度上影响a-Si PV的温度值;晴天时的温差大于多云天气下的温差.实测值与模拟值对比表明：该模型可以准确模拟PV温度在晴和多云天气下的变化;数值结果与实验结果最大差值为3.9℃,主要原因是多云天气日照辐射强度的波动性和PV材料热容引起的热响应时滞.建立的a-Si PV热模型考虑了主要的影响因素,可较为准确地得到在晴和多云天气下的温度变化.

英文摘要：

In order to investigate the temperature of amorphous silicon photovoltaic panel （a Si PV） under sunny and cloudy conditions, a thermal model was developed based on the total energy balance on the control volume. In the differential equation, the corresponding short wave radiation, long wave radiation, convection and generated power were determined, respectively. And then, this equation was solved by a newly-developed program. Besides, an experimental mockup was designed to get the experimental data for the verification of the numerical results. The measured results show that the effect of solar irradiance on temperature is much more significant than that of the installation angles and ambient temperature, and that the maximum temperature variation under sunny condition is greater than that under cloudy condition. The comparative analysis shows that this model could correctly predict the temperature of the a-Si PV under sunny and cloudy conditions. The maximum difference is 3.9 ℃. The acceptable reasons are the solar irradiance with strong fluctuation under cloudy condition and the PV thermal response time effects caused by the thermal mass of the PV materials. In summary, this model could consider most of the variables influencing the temperature of the PV and get the precise temperature variation of the a-Si PV under sunny and cloudy conditions.