A Two-Stage Method for Measuring the Heliostat Offset

被引：3
|
作者：
Jessen, Wilko [1 ]
Roeger, Marc [1 ]
Prahl, Christoph [1 ]
Pitz-Paal, Robert [2 ]
机构：
[1] German Aerosp Ctr DLR, Inst Solar Res, Paseo Almeria 73, Almeria 04001, Spain
[2] German Aerosp Ctr DLR, Inst Solar Res, D-51147 Cologne, Germany
来源：
SOLARPACES 2020 - 26TH INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS | 2022年 / 2445卷
关键词：
D O I：
10.1063/5.0087036
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The conventional method of initial heliostat calibration by sequentially pointing the heliostats one by one onto a target is a very slow process. The use of unmanned airborne vehicles (UAVs) is a possible approach to developing a less time consuming procedure for the initial setup of the field control system and elimination of offset in light beam pointing. This paper presents a UAV based method for measuring the heliostat offset in two stages. The first stage, preliminary and less accurate, creates a three-dimensional model of the mirror facet corners in order to estimate the heliostat orientation. The estimated orientation from the first stage is a prerequisite for the second stage of measurement, in which the highly accurate heliostat orientation is derived from deflectometrically measuring the mirror shape. While work is still ongoing to fully implement the final steps of the second stage, the measuring principles has been demonstrated and partially validated for the fast stage.
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页数：6
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