The influences of tracking mode and solar intercept angle on the ideal trough parabolic mirror were analyzed.The functional relationships among the geometric concentration ratio of system, the relative aperture of concentrator, energy flux distribution and the rim angle were presented.Under the ideal condition, the maximum concentration ratio of the trough concentrator is 212.59 while the rim angle δ is 44.87 ° and the relative aperture is 1.652 m.The cosine values of incidence angles in singleaxis tracking mode were calculated in Beijing, Shanghai and Kunming at different times throughout the year.The results showed the cosine values of the incidence angle have nothing to do with the latitudes when adopting east-west horizontal axis tracking mode.However, the incidence angle changes a lot in spring and winter, but that changes a little in summer and autumn.Considering different widths of solar cells and concentration ratios, the parameters of trough style parabolic mirror were also been designed and analyzed.%分析了跟踪方式和太阳张角对理想槽式抛物面反射镜的影响,给出了几何聚光比、相对口径、能流分布、边界角之间的函数关系式.在理想情况下,边界角δ为44.87°时,槽式聚光器的最大聚光比为212.59,此时相对口径为1.652 m.讨论了北京、上海、昆明等地单轴跟踪在全年不同时刻入射角余弦值的变化规律.采取东-西水平轴跟踪时,入射角余弦值与各地纬度无关;采取南-北水平轴跟踪时,春冬两季每天不同时刻入射角的变化范围较大,夏秋两季的变化范围较小.文章针对不同宽度太阳电池和聚光比对抛物镜面参数进行了设计分析.
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