高精度太阳位置算法及在太阳能发电中的应用

High Precision Computation for Sun Position and Its Application on Solar Energy

在基于微控制器的主动式跟踪太阳能发电中,需要计算出太阳位置,以此跟踪太阳提高发电效率。而对于开环控制的太阳跟踪系统中,太阳位置的计算精度更为重要。文中根据1998年Jean Meeus出版的《天文算法》中计算天体方法,给出了计算太阳位置具体方法,此方法在2000年前后1000年范围内累计误差不超过0.003°,完全能够满足太阳跟踪的需要。文中还根据此算法计算了太阳赤经和太阳赤纬,并对结果进行了比较,最后给出了在太阳能发电中的应用实例。

In the driving-type track system for solar electrical power generation,calculating the solar position to realize the track in order to improve efficiency of the electricity generation is requested. Regarding open-loop control solar energy tracking system, solar position computational accuracy is especially important. This report described the algorithm written in a book by Jean Meeus in 1998 is effective for one thousand years from now. , with uncertainties for 0.003°. At last in the paper, we compute solar declination and solar right ascension based on this algorithm and compare the result with the given data. The results show high accuracy, small error and easy programming.