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Radar Technology For Heliostat Position Control

Klimek, Jasmin and Sauerborn, Markus and Hoffschmidt, Bernhard and Sieger, Stefan and Biegel, Gregor and Essen, Helmut and Göttsche, Joachim and Hilger, Patrick (2012) Radar Technology For Heliostat Position Control. Solar Paces Conference 2012, 11.-14. Sept. 2012, Marrakech, Marokko.

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The Solar Institute Jülich (SIJ) and the Fraunhofer Institute for High Frequency Physics and Radar Techniques (FHR) ascertains by the feasibility study HelioScan the capability of a new innovative method of determination the positions of heliostats of a heliostat field, using a radar system to manage their positions. Other remote control systems using photo optical or laser systems were tested for comparison. The almost deployed detection systems for position analysing are contact detection systems and have fixed encoders at each driver axis or motor of the heliostat. In the project HelioScan different fare detection systems are analysed on their utilizability. This paper opens a special focus on the investigations of the radar technology in the project. The new single remote monitoring sensor system should have low cost in terms of manufacturing, installation, operation, calibration and maintenance. The sensor system shall also be applicable regardless of the type of mirror, which increases the range of applications and marketing opportunities. To investigate the suitability of short-wave radar, photo optical and laser systems, first experiments have been conducted at the heliostat field of the experimental solar thermal power plant in Jülich (STJ). Using an adapted test radar of FHR, millimetre radar waves were directed from the research platform of the solar tower to the heliostat field. The reflected signals were evaluated by using high-quality sensors and new computational algorithms to analyse the quality of the position information. The results of the measurements show until now that the speed advantages of a surface radar scan allow a rapid and simultaneous detection of many heliostats, offering the capability of a fast analysis of the whole field. Further details of these first radar remote monitoring field tests and results of the signal analysis of the heliostat position are presented.

Item URL in elib:https://elib.dlr.de/79615/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Radar Technology For Heliostat Position Control
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Klimek, Jasminjasmin.klimek (at) fhr.fraunhofer.deUNSPECIFIED
Sauerborn, Markussauerborn (at) sij.fh-aachen.deUNSPECIFIED
Hoffschmidt, Bernhardbernhard.hoffschmidt (at) dlr.deUNSPECIFIED
Sieger, Stefanstefan.sieger (at) fhr.fraunhofer.deUNSPECIFIED
Biegel, Gregorgregor.biegel (at) fhr.franhofer.deUNSPECIFIED
Essen, Helmuthelmut.essen (at) fhr.fraunhofer.deUNSPECIFIED
Göttsche, Joachimgoettsche (at) sij.fh-aachen.deUNSPECIFIED
Hilger, Patrickhilger (at) sij.fh-aachen.deUNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:solar thermal power plant, heliostat, position control, remote monitoring, millimetre wave radar, synthetic aperture
Event Title:Solar Paces Conference 2012
Event Location:Marrakech, Marokko
Event Type:international Conference
Event Dates:11.-14. Sept. 2012
Organizer:International Energy Agency, 9, rue de la Fédération, 75739 Paris Cedex 15, France
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Systems (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Punktfokussierende Systeme (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research
Deposited By: Wiegmann, Antoinette
Deposited On:14 Dec 2012 13:38
Last Modified:14 Dec 2012 13:38

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