中文摘要：

当前聚光光伏系统存在很多问题，比如跟踪器的跟踪精度偏低、聚焦光斑强度分布不均匀、聚焦光斑的形状跟太阳电池不匹配等，二次聚光器可以解决这些问题，从而提高高倍聚光光伏系统的光电转换效率。对高倍聚光光伏系统中的菲涅耳透镜和二次聚光器的聚光原理进行了简要分析．重点对全反射式二次聚光器进行了二维聚光的理论分析，并配合非成像光学的光线追迹方法，设计并加工了应用于某高倍聚光光伏系统的全反射式二次聚光器。对该二次聚光器的主要性能进行了仿真分析及评价，结果表明：该聚光器能提高高倍聚光光伏系统的整体性能。

英文摘要：

At present, the high concentrated photovoltaic system has a lot of problems, for example, tracking accuracy of tracker is too low, focused spot irradiation distribution is ununiform, the shape of focused spot is different from the shape of solar cell, and so on. Secondary optics can improve the photoelectric conversion efficiency of the high concentrated photovoltaic system by solving these problems. The condensation principles of Fresnel lens and secondary optics were analyzed, in particularly two- dimensional condensation theory about the total reflection-type secondary optics was analyzed. According to the results of theoretical analysis and the approach of ray trace of nonimaging optics, the total reflection-type secondary optics used in a high concentrated photovoltaic system was designed and processed. And some main performance of the secondary optics were analyzed and evaluated by simulation software. The conclusion is drawn that the total reflection-type secondary optics can improve the whole performance of the high concentrated photovoltaic system.