一种槽式聚光器追日误差补偿方法

A Sun-Tracking Error Compensation Method of Solar Parabolic Trough Concentrator

为了消除槽式聚光器回转轴位置偏差对太阳跟踪精度产生的影响,以南北布置的槽式聚光器为例,通过分析槽式聚光器回转轴在安装时或长期工作之后产生的位置偏离,建立回转轴偏离理想位置的数学模型,推导出太阳相对回转轴的高度角和方位角计算公式,进而对回转轴偏离产生的误差进行补偿。算法适用于任意方向布置的槽式聚光器的跟踪角度计算。

In order to offset the detrimental effect of the deviation of the solar parabolic trough concentrator's rotation axis on the sun tracking accuracy,this paper,taking a solar parabolic trough concentrator installed in the south-north dir-ection as an example,through analyzing the position deviation of the solar parabolic trough concentrator's rotary shaft after installation or long-term operation,establishes a mathematical model of the rotary shaft deviation from the ideal position,develops the calculation formula for the sun elevation angle and azimuth angle relative to the rotary shaft,and compensates the error from the rotary shaft deviation. In addition,the algorithm mentioned in this paper is applicable to the tracking angle calculation of solar parabolic trough concentrator installed in the arbitrary direction.