The FK concentrator has demonstrated during the last years that compares very well with other Fresnel-based concentrator optics for CPV. There are several features that provide the FK high performance: (1) high optical efficiency; (2) large tolerance to tracking misalignment and manufacturing errors, thanks to a high CAP (Concentration-Acceptance Product); (3) good irradiance uniformity and low chromatic dispersion on the cell surface. Non-uniformities in terms of absolute irradiance and spectral content produced by conventional CPV systems can originate electrical losses in multi-junction (MJ) solar cells. The aim of this work is to analyze the influence of these non-uniformities in the FK concentrator performance and how FK concentrator provides high electrical efficiencies thanks to its insensitivity to chromatic aberrations, especially when components move away from the module nominal position due to manufacturing misalignments. This analysis has been done here by means of both, experimental on-sun measurements and simulations based on 3D fully distributed circuit model for MJ cells.
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27 September 2013
9TH INTERNATIONAL CONFERENCE ON CONCENTRATOR PHOTOVOLTAIC SYSTEMS: CPV-9
15–17 April 2013
Miyazaki, Japan
Research Article|
September 27 2013
Experimental confirmation of FK concentrator insensitivity to chromatic aberrations Free
P. Zamora;
P. Zamora
Cedint, Universidad Politécnica de Madrid (UPM), Madrid,
Spain
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P. Espinet-González;
P. Espinet-González
IES (Instituto de Energía Solar), Universidad Politécnica de Madrid (UPM), Madrid,
Spain
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P. Benitez;
P. Benitez
Cedint, Universidad Politécnica de Madrid (UPM), Madrid,
Spain
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I. García;
I. García
IES (Instituto de Energía Solar), Universidad Politécnica de Madrid (UPM), Madrid,
Spain
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I. Rey-Stolle;
I. Rey-Stolle
IES (Instituto de Energía Solar), Universidad Politécnica de Madrid (UPM), Madrid,
Spain
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J. C. Miñano;
J. C. Miñano
Cedint, Universidad Politécnica de Madrid (UPM), Madrid,
Spain
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C. Algora
C. Algora
IES (Instituto de Energía Solar), Universidad Politécnica de Madrid (UPM), Madrid,
Spain
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P. Zamora
Cedint, Universidad Politécnica de Madrid (UPM), Madrid,
Spain
P. Espinet-González
IES (Instituto de Energía Solar), Universidad Politécnica de Madrid (UPM), Madrid,
Spain
P. Benitez
Cedint, Universidad Politécnica de Madrid (UPM), Madrid,
Spain
I. García
IES (Instituto de Energía Solar), Universidad Politécnica de Madrid (UPM), Madrid,
Spain
I. Rey-Stolle
IES (Instituto de Energía Solar), Universidad Politécnica de Madrid (UPM), Madrid,
Spain
J. C. Miñano
Cedint, Universidad Politécnica de Madrid (UPM), Madrid,
Spain
C. Algora
IES (Instituto de Energía Solar), Universidad Politécnica de Madrid (UPM), Madrid,
Spain
AIP Conf. Proc. 1556, 88–91 (2013)
Citation
P. Zamora, P. Espinet-González, P. Benitez, I. García, I. Rey-Stolle, J. C. Miñano, C. Algora; Experimental confirmation of FK concentrator insensitivity to chromatic aberrations. AIP Conf. Proc. 27 September 2013; 1556 (1): 88–91. https://doi.org/10.1063/1.4822206
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