Article (Scientific journals)
Optical study of diffraction grating/Fresnel lens combinations applied to a spectral-splitting solar concentrator for space applications
Michel, Céline; Loicq, Jerôme; Thibert, Tanguy et al.
2015In Applied Optics, 54 (22), p. 6666-6673
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Keywords :
Diffractive optics; Concentrators; Nonimaging optics; Space optics; Solar energy
Abstract :
[en] This paper presents a new design of a planar solar concentrator with spectral splitting of light for space applications. This concentrator spectrally splits the incident light into mainly two parts. Each part is then focused onto specific spatially separated photovoltaic cells, allowing for independent control of respective cells output power. These advantages of both spectral splitting and light focusing are here combined thanks to a specific diffraction grating superimposed on a Fresnel lens. The theoretical principle of the optical design is presented, with optimization of each element and improvement steps, including optimization of grating period evolution along the lens, and testing of two kinds of gratings (a blazed and a lamellar one). First numerical results are presented, highlighting the possibility to design a concentrator at about 10× or more for each cell, with an output power larger than that of a classical concentrator focusing on a GaAs SJ cell, and less than 10% of losses for tracking errors up to ±0.8°. Some experimental results are also presented.
Research center :
CSL - Centre Spatial de Liège - ULiège
Disciplines :
Physics
Author, co-author :
Michel, Céline ;  Université de Liège > Département de physique > Optique - Hololab
Loicq, Jerôme ;  Université de Liège > CSL (Centre Spatial de Liège)
Thibert, Tanguy ;  Université de Liège > CSL (Centre Spatial de Liège)
Habraken, Serge ;  Université de Liège > Département de physique > Optique - Hololab
Language :
English
Title :
Optical study of diffraction grating/Fresnel lens combinations applied to a spectral-splitting solar concentrator for space applications
Publication date :
01 August 2015
Journal title :
Applied Optics
ISSN :
1559-128X
eISSN :
2155-3165
Publisher :
Optical Society of America, Washington, United States - District of Columbia
Volume :
54
Issue :
22
Pages :
6666-6673
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture [BE]
Available on ORBi :
since 23 July 2015

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