1. Backward-gazing method for heliostats shape errors measurement and calibration
- Author
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François Hénault, Cyril Caliot, and Mathieu Coquand
- Subjects
Wavefront ,Brightness ,Engineering ,Heliostat ,Power station ,business.industry ,Calibration ,Computer vision ,Artificial intelligence ,business ,Adaptive optics ,Tracking (particle physics) ,Field (computer science) - Abstract
The pointing and canting accuracies and the surface shape of the heliostats have a great influence on the solar tower power plant efficiency. At the industrial scale, one of the issues to solve is the time and the efforts devoted to adjust the different mirrors of the faceted heliostats, which could take several months if the current methods were used. Accurate control of heliostat tracking requires complicated and onerous devices. Thus, methods used to adjust quickly the whole field of a plant are essential for the rise of solar tower technology with a huge number of heliostats. Wavefront detection is widely use in adaptive optics and shape error reconstruction. Such systems can be sources of inspiration for the measurement of solar facets misalignment and tracking errors. We propose a new method of heliostat characterization inspired by adaptive optics devices. This method aims at observing the brightness distributions on heliostat’s surface, from different points of view close to the receiver of the po...
- Published
- 2017
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