Enhancement of sun-tracking with optoelectronic devices

Jiunn Chi Wu

研究成果: 書貢獻/報告類型會議論文篇章同行評審

摘要

Sun-tracking is one of the most challenging tasks in implementing CPV. In order to justify the additional complexity of sun-tracking, careful assessment of performance of CPV by monitoring the performance of sun-tracking is vital. Measurement of accuracy of sun-tracking is one of the important tasks in an outdoor test. This study examines techniques with three optoelectronic devices (i.e. position sensitive device (PSD), CCD and webcam). Outdoor measurements indicated that during sunny days (global horizontal insolation (GHI) > 700 W/m2), three devices recorded comparable tracking accuracy of 0.16∼0.3°. The method using a PSD has fastest sampling rate and is able to detect the sun's position without additional image processing. Yet, it cannot identify the sunlight effectively during low insolation. The techniques with a CCD and a webcam enhance the accuracy of centroid of sunlight via the optical lens and image processing. The image quality acquired using a webcam and a CCD is comparable but the webcam is more affordable than that of CCD because it can be assembled with consumer-graded products.

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主出版物標題11th International Conference on Concentrator Photovoltaic Systems, CPV 2015
編輯Gerald Siefer, Mathieu Baudrit, Ignacio Anton
發行者American Institute of Physics Inc.
ISBN(電子)9780735413269
DOIs
出版狀態已出版 - 28 9月 2015
事件11th International Conference on Concentrator Photovoltaic Systems, CPV 2015 - Aix-les-Bains, France
持續時間: 13 4月 201515 4月 2015

出版系列

名字AIP Conference Proceedings
1679
ISSN(列印)0094-243X
ISSN(電子)1551-7616

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???event.eventtypes.event.conference???11th International Conference on Concentrator Photovoltaic Systems, CPV 2015
國家/地區France
城市Aix-les-Bains
期間13/04/1515/04/15

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