A self-focus high precision scheme applied to HCPV solar center tracker

Yiing Yuh Lin, Fu Mao Jhuang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An image processor with a self-focus scheme to estimate the center of the solar disc is presented in this chapter. It can be utilized in the automatic tracking module on a HCPV power generation unit to closely follow the solar center with high precision under various weather conditions. To start the proposed procedures, a photo containing the solar image is taken first by a digital sensing device. Then, it is sent to the algorithm and goes through a series of steps to identify and to isolate the solar image. Finally, the solar center is located by the three-point center method. The proposed scheme, based on a weighted brightness factor of the image, evaluates the image center by comparing the estimated solar diameter to the reference one and iteratively modifies the thresholds in the image isolation step. The results show total processing time can be a fraction of a second and the estimation accuracy reaches to less than an arc second, depending on the pixels in the taken photo.

Original languageEnglish
Title of host publicationProceedings of the 3rd International Conference on Intelligent Technologies and Engineering Systems, ICITES 2014
EditorsJengnan Juang
PublisherSpringer Verlag
Pages437-443
Number of pages7
ISBN (Print)9783319173139
DOIs
Publication statusPublished - 2016 Jan 1
Event3rd International Conference on Intelligent Technologies and Engineering Systems, ICITES 2014 - Kaohsiung, Taiwan
Duration: 2014 Dec 192014 Dec 21

Publication series

NameLecture Notes in Electrical Engineering
Volume345
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Other

Other3rd International Conference on Intelligent Technologies and Engineering Systems, ICITES 2014
CountryTaiwan
CityKaohsiung
Period14-12-1914-12-21

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering

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  • Cite this

    Lin, Y. Y., & Jhuang, F. M. (2016). A self-focus high precision scheme applied to HCPV solar center tracker. In J. Juang (Ed.), Proceedings of the 3rd International Conference on Intelligent Technologies and Engineering Systems, ICITES 2014 (pp. 437-443). (Lecture Notes in Electrical Engineering; Vol. 345). Springer Verlag. https://doi.org/10.1007/978-3-319-17314-6_56