Integration of an On-Axis General Sun-Tracking Formula in the Algorithm of an Open-Loop Sun-Tracking System

Sensors

Kok-Keong Chong¹  Chee-Woon Wong²  Fei-Lu Siaw²  Tiong-Keat Yew²  See-Seng Ng²  Meng-Suan Liang²  Yun-Seng Lim² 

[1] Faculty of Engineering and Science, Universiti Tunku Abdul Rahman,Off Jalan Genting Kelang, Setapak, 53300 Kuala Lumpur, Malaysia;

关键词: general sun-tracking formula;    azimuth-elevation;    sun-tracking accuracy;    passive sensors;    solar concentrator;    solar collector;   

DOI  :  10.3390/s91007849

来源: mdpi

【 摘 要 】

A novel on-axis general sun-tracking formula has been integrated in the algorithm of an open-loop sun-tracking system in order to track the sun accurately and cost effectively. Sun-tracking errors due to installation defects of the 25 m² prototype solar concentrator have been analyzed from recorded solar images with the use of a CCD camera. With the recorded data, misaligned angles from ideal azimuth-elevation axes have been determined and corrected by a straightforward changing of the parameters' values in the general formula of the tracking algorithm to improve the tracking accuracy to 2.99 mrad, which falls below the encoder resolution limit of 4.13 mrad.

【 授权许可】

CC BY   
© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland. This