Tracking motions in current heliostats are usually performed in discrete steps, even though the motion of the sun is continuous. Aiming errors due to the discrete steps are often about 1 mrad or more. A significant reduction of tracking error by smooth continuous tracking is presented. The implementation uses an electronic speed control unit to modify the rotational speed of the two AC motors on an existing heliostat. The continuous tracking system was implemented and successfully operated at the Weizmann Institute heliostat field. Measurements of heliostat motion show that aiming error due to tracking intervals was practically eliminated. A comparison of heliostat motions and flux on the target in step-tracking and continuous tracking modes is reported.
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ASME 2003 International Solar Energy Conference
March 15–18, 2003
Kohala Coast, Hawaii, USA
Conference Sponsors:
- Solar Energy Division
ISBN:
0-7918-3676-2
PROCEEDINGS PAPER
Continuous Tracking of Heliostats
A. Kribus
,
A. Kribus
Tel Aviv University, Tel Aviv, Israel
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I. Vishnevetsky
,
I. Vishnevetsky
Weizmann Institute of Science, Rehovot, Israel
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M. Meri
,
M. Meri
Weizmann Institute of Science, Rehovot, Israel
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A. Yogev
,
A. Yogev
Weizmann Institute of Science, Rehovot, Israel
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A. Sytnik
A. Sytnik
Falcon Technologies, Tel Aviv, Israel
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A. Kribus
Tel Aviv University, Tel Aviv, Israel
I. Vishnevetsky
Weizmann Institute of Science, Rehovot, Israel
M. Meri
Weizmann Institute of Science, Rehovot, Israel
A. Yogev
Weizmann Institute of Science, Rehovot, Israel
A. Sytnik
Falcon Technologies, Tel Aviv, Israel
Paper No:
ISEC2003-44018, pp. 553-562; 10 pages
Published Online:
January 5, 2009
Citation
Kribus, A, Vishnevetsky, I, Meri, M, Yogev, A, & Sytnik, A. "Continuous Tracking of Heliostats." Proceedings of the ASME 2003 International Solar Energy Conference. Solar Energy. Kohala Coast, Hawaii, USA. March 15–18, 2003. pp. 553-562. ASME. https://doi.org/10.1115/ISEC2003-44018
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