High accuracy sun-tracking using CCD and field test for PV system

Jiunn Chi Wu, Wu Chun Lin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Tracking photovoltaic (PV) and concentrator photovoltaic (CPV) can enhance electricity output by either single or two-axis sun-tracking. In addition to solar irradiation, tracking accuracy is fundamentally important to the performance of PV/CPV system. We developed a technique using the CCD apparatus for accurate sun-tracking and monitor its outdoor performance on a two-axis tracking PV system. The apparatus consists of a closed-loop solar tracker based on light sensor and 9 PV modules. The processing speed of the apparatus is upto 0.03 s which sufficient for operating in outdoor test (10-30 s is required). The view angle is 7.6° and angular resolution is 0.008° by using a lens of 50 mm (aperture F2.8). The outdoor test for sun-tracking is performed on a period of six days with sunny and cloudy weather and satisfactory results were obtained with 92% of the distribution of offset angles smaller than 0.3°.

Original languageEnglish
Title of host publication9th International Conference on Concentrator Photovoltaic Systems, CPV 2013
EditorsKenji Araki, Frank Dimroth, Ignacio Anton
PublisherAmerican Institute of Physics Inc.
Pages214-217
Number of pages4
ISBN (Electronic)9780735411821
DOIs
StatePublished - 2013
Event9th International Conference on Concentrator Photovoltaic Systems, CPV 2013 - Miyazaki, Japan
Duration: 15 Apr 201317 Apr 2013

Publication series

NameAIP Conference Proceedings
Volume1556
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference9th International Conference on Concentrator Photovoltaic Systems, CPV 2013
Country/TerritoryJapan
CityMiyazaki
Period15/04/1317/04/13

Keywords

  • CCD
  • Field test of PV
  • Sun-tracking

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