基于抛物线方程和梯度折射率计算方法的太阳能聚光器设计  

Design of Solar Concentrator Based on Parabola Equation and Gradient Index Calculation Method

作　　者：赵天野 姜肇国 徐熙平[1] 尹鹏[1] ZHAO Tian-ye;JIANG Zhao-guo;XU Xi-ping;YIN Peng(School of Optoelectronic Engineering,Changchun University of Science and Technology,Changchun 130022)

机构地区：[1]长春理工大学光电工程学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2020年第5期49-55,共7页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金(61605016)。

摘　　要：针对传统导光板型太阳能聚光器中存在的漏光问题,提出了基于抛物线方程和梯度折射率计算方法的太阳能聚光器设计,与匀质材料的聚光系统做了对比分析,获得了较高的光学效率,并对其耦合后的入射角度与聚光模块的抛物线系数及其高度之间的关系进行了研究。为实现接近理想情况下的光线自聚焦现象,研究了光波导板内部折射率的分布情况。在考虑菲涅尔反射损耗和各处材料的吸收损耗等情况下,利用LightTools光学仿真软件对所设计的聚光系统进行光线追迹,结果表明:在光波导板长度为55 mm时,光学聚光比达到22,光学效率为80%,该聚光器系统性能最佳,为小型聚光光伏系统在日常生活中的应用发挥了一定的指导作用。In allusion to the rays leakage problem of traditional planar lightguide solar concentrator,a novel design of solar concentrator based on parabola equation and gradient index calculation method is proposed.Compared to the homogeneous material concentration system,the proposed design can acquire a higher optical efficiency.The relation of the incident angle after coupling with parabola coefficient and the height of concentration module is also explored.To realize rays self-focus which is in nearly ideal conditions,the distribution of index in the lightguide is studied.The ray-tracing simulations are carried out by LightTools optical simulation software considering the Fresnel reflection loss and optical material absorption in the whole system.The results show that the optical concentration ratio and optical efficiency are 22 and 80%when the length of lightguide is 55 mm,in this case,the performance of concentration system is optimum.This system can play an instructional role in the daily application of small concentration photovoltaics system.

关 键 词：非成像光学 太阳能 聚光光伏系统 梯度折射率 

分 类 号：TP302.1[自动化与计算机技术—计算机系统结构]