| 摘要: | 本論文首在研究折射式聚光型太陽能模組之光學特性調控，尤其是改善聚光型太陽能模組的體積大小(厚薄)與匯聚焦聚的光型調變，進而增益三五族多接面晶片之光學換效率。三五族多接面晶片本身晶片耐熱特性與成本昂貴的問題，可藉由聚光型太陽能模組的應用，降低三五族晶片成本過高的問題。改善透鏡造成的表面照度不均勻的受光光型與解決晶片區域集中發熱的熱點問題，增益三五族多接面太陽能晶片轉換效率(88%)。
在應用聚光型太陽能模組之前，本論文使用LightTool光學軟體模擬太陽能晶片(三五族多接面太陽能晶片) 的表面照度與受光面之光斑分佈，模擬計算出其表面光線堆疊光斑的轉換效率；首先的對照組模型，將目前業界常用的折射型模組，用DOE的分析手法將透鏡大小(100x~300x)與聚焦位置(100mm~300mm)計算出標準的模組轉換效率(Max:82%)，其中的SOE元件可以改變聚焦光的光斑增加模組轉換效率，然而折射式模組有聚焦過長與體積過大過重的條件限制。為了普及聚光型模組，解決問題的實驗組則增加一組拋物面反射鏡，採用反射式的概念，折返入射光的聚焦與光斑，轉置晶片受光的位置，搭配DOE分析手法，將透鏡大小(40x~100x)與聚焦位置(100mm)模擬出高於業界聚光型模組轉換效率(Max: 88%)。評估在實際生產設計之公差與組裝之公差是否破壞本論文的模擬結果。
經過LightTool光學軟體優化後的模組，總體積厚度由22cm降至4.2cm，比較目前業界聚光型太陽能模組的轉換效率為82%，輕薄型之光型均勻分佈且轉換效率達88%。對於輕薄型太陽能模組的可接受角維持相同的容錯角度<1.00度( LightTool軟體，光源設定為平行光，未加入太陽展開角: 0.25度，故可接受角需減少約0.25度)，整體系統模組的元件增加，但是兼具原傳統製程的標準生產方式，增加生產製造的競爭力與降低材料組裝與運送的成本，達成本論文模擬預設定的目標。
關鍵詞：聚光型太陽能模組、二次光學元件、Fresnel lenses
;In this thesis, the study is first to explore the optical characteristics of the refraction type solar concentrator module, especially to minimize the volume size (thickness) of the convergent solar light and the light pattern modulation of the convergent focus, and further to increase the optical conversion efficiency of the Solar Cells. To improve the thermophile characteristics and to reduce the high cost of the Solar Cells, the application of the concentrating solar module is adopted so as to enhance the lens caused by un-even surface illumination by the light pattern and solve the problem of concentrating the regional heat of the Solar Cells, and to gain a higher level of the Solar Cells conversion efficiency (88%).
In the previous study, LightTools optical software was used to simulate the surface illuminance of the Solar Cells and the light beams distribution of the light receiving surface, and then to calculate the light conversion efficiency of the surface area; with Fresnel lenses (100x ~ 300x) and the focal lens position (100mm ~ 300mm) to calculate the standard module conversion efficiency (Max: 82%) by the QC tools of DOE analysis method, the control group is used to calculate the standard module conversion efficiency, in which the SOE element can help change the focus light pattern to increase the module conversion efficiency; however, the refraction module is conditioned by the length of the focal lens and the heavy and large size of the volume. In order to make the concentrator module universal, the experimental group in the study is used by using the concept of reflection, the focusing and Sun light of the incident light, the position of the transposed Solar Cells to upside, and then doing the DOE analysis method with Fresnel lenses (40x ~ 100x) and the focal lens position (100mm) calculated. The module conversion efficiency (Max: 88%) of this study is also related to assessing whether the tolerances in the actual assemble and production design would destroy the simulation results of this thesis.
By the LightTools optical software optimized module, the total volume thickness is reduced from 22cm to 4.2cm with the light pattern uniform distribution and the acceptance angle of the thin type concentrator is 1.00 degree (Due to LightTools optical software, light source setup without solar solid angle 0.25 degree, need to decrease acceptance angle around 0.25 degree), respectively and the optical efficiency is up to Max 88%. The results of the study strongly support the application of the concentrating solar modules in an increase of the competitiveness of manufacturing and a decrease of the material assembly and the delivery cost.
Keywords: solar concentrator module, Fresnel lenses, LightTools |
