Terrestrial Laser Scanning for Heliostat Surface Shape Determination and Canting Errors Correction

Maitane Ferreres Eceiza; Moritz Bitterling; Thomas Schmidt; William Baltus; Antoine Perez; Emmanuel Guillot; Gregor Bern

doi:10.52825/solarpaces.v2i.950

Authors

Maitane Ferreres Eceiza Fraunhofer Institute for Solar Energy Systems https://orcid.org/0000-0003-2347-0235
Moritz Bitterling Fraunhofer Institute for Solar Energy Systems https://orcid.org/0009-0001-9158-7980
Thomas Schmidt Fraunhofer Institute for Solar Energy Systems
William Baltus Laboratoire Procédés, Matériaux et Energie Solaire
Antoine Perez Laboratoire Procédés, Matériaux et Energie Solaire
Emmanuel Guillot Laboratoire Procédés, Matériaux et Energie Solaire https://orcid.org/0000-0002-0552-0262
Gregor Bern Fraunhofer Institute for Solar Energy Systems

DOI:

https://doi.org/10.52825/solarpaces.v2i.950

Keywords:

Solar Field, Heliostats, Canting Errors, Terrestrial Laser Scanning, LiDAR

Abstract

Canting errors, resulting from misalignments of heliostat facets, pose a significant challenge to solar power plants' efficiency. Traditional methods of alignment are time-consuming and costly. This paper presents an innovative approach utilizing Terrestrial Laser Scanning (TLS) technology for precise and fast heliostat alignment. The method involves point cloud processing, paraboloid fitting, and heliostat facet’s screw adjustments. A case study at Thémis solar tower demonstrates the effectiveness, resulting in a significant improvement in optical quality and power output.

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References

G. Zhu et al. Roadmap to Advance Heliostat Technologies for Concentrating Solar-Thermal Power. Golden, CO: National Renewable Energy Laboratory, 2022. https://doi.org/10.2172/1888029

A. Sánchez-González, A. Lozano-Cancelas, R. Morales-Sánchez, J. C. Castillo, Canting heliostats with computer vision and theoretical imaging, Renewable Energy, v. 200, 2022, https://doi.org/10.1016/j.renene.2022.10.014

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M. Bitterling and M. Ferreres Eceiza, T. Schmidt, E. Guillot, G. Bern. Finding the Shape of the Largest Solar Furnace in the World. Presented at the 29th SolarPACES Conference in Sydney, Australia, October 10-13, 2023. https://doi.org/10.24406/publica-2839

M. Ferreres Eceiza, M. Bitterling, T. Schmidt, T. Boehret, D. Wohlfeld, G. Bern. Terrestrial Laser Scanning for Fast Spatially Resolved Cleanliness Assessment of Heliostat Fields. SolarPACES Conference, 2022. https://doi.org/10.52825/solarpaces.v1i.705

Terrestrial Laser Scanning for Heliostat Surface Shape Determination and Canting Errors Correction

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