大型阵列式太阳能热发电定日镜跟踪系统设计

摘要

In order to effectively improve the efficiency of the solar tower power generation system,the two-axis he-liostat tracking device is designed by using visual Sun trajectory tracking combined with photoelectric tracking scheme. The sun time angle,declination angle,solar altitude angle and azimuth angle,are introduced to deduce the altitude angle and azimuth angle of heliostats,and a two-axis tracking control system is designed,which is based on the solar position algorithm. The analysis and research results show that the device can accurately tracking the sun and can effectively improve the utilization rate of solar energy.%为了有效提高太阳能塔式发电系统的发电效率，采用视日运行轨迹跟踪和光电跟踪相结合的方案，设计了双轴定日镜跟踪装置。首先介绍了时角和赤纬角以及太阳高度角和方位角的计算公式，进而推导出了定日镜的高位角和方位角计算方程，并以此为依据设计了一种基于太阳位置算法的双轴跟踪控制系统。理论分析与实验结果表明，该装置能够准确跟踪太阳，并且能有效提高太阳能的利用率。