- 學位論文
聚光型太陽能發電模組之封裝參數研究
The Parametric Study on The Packaging of Concentrator Photovoltaic Module
摘要
本論文研製之高聚焦式太陽光電池系統(HCPV)與追日系統(Tracker)的聚光型發電模組，可以有效提高發電效率、降低發電成本。目前太陽能晶片電池效率轉換愈來愈高，卻常有因為製程或封裝造成的誤差，使擁有高效率轉換卻無法發揮極致轉換效能，因此，本文藉由LightTools與簡易式共軛梯度法模擬高聚光太陽能模組，說明各封裝參數所造成效率的影響。我們探求以下幾點封裝參數，其中包含菲涅爾透鏡圈數(Cycles)、中心軸錯位、菲涅爾透鏡溝槽R角、第二聚光器(Second Optical Collector)傾角、強化玻璃、有無二次光學聚光杯等，對發電效率的影響。研究結果顯示中心軸錯位、第二聚光器傾角等因素對於照度值( )對實測發電量影響較大。而圈數過多則會因為溝槽底部R角影響使照度值下降，菲涅爾透鏡溝表面平滑則可使透鏡效率提高。稜鏡式菲涅爾透鏡若使用二次光學聚光器，其入射光斜角1度時聚光效率可以由50%提升到67%對於發電效率有顯著影響。
並列摘要
A procedure is Concentrator photovoltaic modules with a high-concentration photovoltaic (HCPV) panel and tracker system can effectively improve the efficiency and reduce the cost of power generation. Recently, solar cell conversion efficiency has improved significantly. However, due to errors occurring during the manufacturing or packaging process, the theoretical conversion efficiency limit for these high efficiency solar cells cannot be practically achieved. In this study, an HCPV solar module is simulated using LightTools and the Simplified Conjugate Gradient Method (SCGM) to represent the effects of each packaging parameter on solar cell efficiency. The effects of the following packaging parameters on power generation efficiency are investigated, including cycles for the Fresnel lenses; misalignment of the center axis; radius, R, of the groove in the Fresnel lenses; tilting angle; the tempered glass used for the secondary condenser optical collector; and if the secondary condenser optical collecting cup is used. It is observed that the misalignment of the center axis and tilting angles of the second optical collector have the greatest effects on illumination power density (W/mm2) and power generation. Increasing the number of cycles for the Fresnel lenses causes a decrease in illumination power density due to the influence of the radius at the bottom of the groove. If a secondary condenser optical collector is used with an injection angle of 1˚, the light focusing efficiency increases from 50% to 67%. This has a significant influence on power generation efficiency.