摘要
双轴太阳跟踪系统的轴系偏差会直接影响其跟踪太阳精度,对太阳能发电系统的整体性能具有重要影响。针对传统的高度-方位式双轴太阳跟踪系统结构,分析了跟踪系统在制造或者安装过程中可能引起的轴系偏差类型,采用矢量投影和球面几何原理建立了数学几何模型,研究了俯仰轴与方位轴正交偏差、方位轴安装垂直偏差对方位角和高度角跟踪偏差角以及太阳跟踪系统精度的影响关系;通过Matlab模拟计算得出了不同轴系偏差对双轴太阳跟踪器跟踪精度的影响变化规律。研究可为双轴太阳跟踪系统的设计、安装和提高跟踪精度提供理论依据。
The axis deviation of two-axis sun tracker will directly affect its tracking accuracy, which will affect the whole performance of the solar system. In this paper, the different types of axis deviation in the process of manufacture or installation were analyzed. The mathematical geometry models were established by using the vector projection and spherical geometry principle to study the orthogonal deviation of elevation axis, vertical deviation of azimuth axis installation and azimuth deviation, elevation deviation, tracking accuracy of the sun tracker, and also to explore the interaction relationships between these factors. The change rules of the influence relationships were obtained by using MatLab simulation with different parameter conditions. This research can provide the theory basis for design, installation of the two- axis sun tracking system, and improve the tracking accuracy.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2014年第11期124-129,共6页
Journal of Wuhan University of Technology
基金
国家高技术研究发展计划(2012AA051104)
国家自然科学基金(51272198)
中央高校基本科研业务费专项资金(2014-VII-009)
武汉理工大学自主研究创新基金(2014-zy-063)
关键词
双轴太阳跟踪器
轴系偏差
跟踪偏差
视日轨迹法
精度影响
two-axissun tracker
axis deviation
tracking deviation
solar trajectory
precision influence
