【摘要】 通过建立光–热–电–环境耦合模型和提出计算电效率的区域离散积分方法，采用蒙特卡洛射线追踪法研究了倾角(θ)对复合抛物面聚光光伏(CPC-PV)系统光学性能的影响，并耦合有限体积法研究了θ和环境风向角(α)对CPC-PV系统热电性能的影响。结果表明，在θ变化范围内，系统的光学效率稳定，平均光学效率为0.92，但辐照分布的均匀性随θ的增大快速下降。存在环境风时，相同θ下随着α增大，晶硅电池层的平均温度和温度分布的均匀性(ζSC)均表现出非单调的变化趋势，在相同α下随着θ的增大，ζSC急剧下降。本研究提出的区域离散积分法考虑了阴影区域和非均匀温度分布对电性能的影响，使用本方法计算的瞬时电效率与平均温度法的最大差异为11.01%。更多还原

【Abstract】 An optical-thermal-electrical-environmental coupling model was established and the regional discrete integral method for calculating electrical efficiency was proposed to investigate the effects of tilt angle(θ) on the optical performance of the compound parabolic concentrating photovoltaic(CPC-PV) system by Monte Carlo ray tracing, and further numerically the effect of θ and ambient wind direction angle(α) on the thermal and electrical performance by coupling finite volume method. The results show that the optical efficiency of the system is stable over the range ofθ variation, with an average optical efficiency of 0.92, but the uniformity of irradiance distribution decreases rapidly as θ increases. Under ambient wind condition, at the same θ, as α increases, the average temperature and the uniformity of temperature distribution(ζSC) on the silicon cell layer show a non-monotonic trend, and the ζSCdecreases sharply with increasing θ at the same α. The regional discrete integral method proposed in this study accounts for the effects of shadow areas and non-uniform temperatures on electrical performance. The maximum difference between the instantaneous electrical efficiency calculated by using the present method and the average temperature method is 11.01%.更多还原