High performance Fresnel-based photovoltaic concentrator

Benı́tez, Pablo; Miñano, Juan C.; Zamora, Pablo; Mohedano, Rubén; Cvetković, Aleksandra; Buljan, Marina; Chaves, Julio; Hernández, Marta I.

doi:10.1364/oe.18.000a25

Cited by 190 publications

(105 citation statements)

References 2 publications

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“…Ventana TM is an off-the-shelf optical train developed by Evonik, 10× Technologies and LPI based on FK concentrator [1][2] and is available with PMMA POE lenses and glass (or silica glass) secondary optics. The FK mixes simplicity (it is essentially a Fresnel lens, whose technology is quite mature) and excellent performance: high concentration and large tolerances, enabling high array efficiencies, combined with a solar cell illumination free of chromatic aberration [3].…”

Section: Introductionmentioning

confidence: 99%

Ventana{trade mark, serif} power train features and performance

Mohedano¹,

Benı́tez²,

Zamora³

et al. 2013

AIP Conference Proceedings

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Most CPV systems are based on Fresnel lenses. Among these, LPI-patented Fresnel-Köhler (FK) concentrator outstands owing to performance and practical reasons. The Ventana TM power train is the first off-the-shelf commercial product based on the FK and comprises both the primary (POE) lenses (a 36-units 1×1 m 2 acrylic panel) and glass (or silica glass) secondary optics (SOE). This high concentration optical train (C g =1,024×, ~250mm optical depth) fits with 5×5 mm 2 (at least) solar cells. The optical train is the fruit of a 1-year development that has included design, modeling, prototyping and characterization, and through the process we had the opportunity to find out how well the actual performance correlates with models, but also learned practical aspects of a CPV system of this kind, some of which have very positive impact on system performance and reliability.

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Section: Introductionmentioning

confidence: 99%

Ventana{trade mark, serif} power train features and performance

Mohedano¹,

Benı́tez²,

Zamora³

et al. 2013

AIP Conference Proceedings

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“…11, an average DC efficiency of 27.8% under the concentrator standard operating condition (CSOC) without periodic cleaning has been demonstrated with the 15 kW CPV system, installed at the IES-UPM Campus, incorporating the latest version of Daido modules and BSQ trackers. 15) 2.5 WP5: Development of CPV modules and systems In addition to concentrator cells, advanced primary and secondary optics, especially dome-shaped Fresnel Koeler (DFK) optics, 16) have been developed, and an optical efficiency of about 85% and a large acceptance angle have been realized through cooperation between UPM and Daido Steel, as shown in Fig. 12.…”

Section: Wp1: New Materials and Device Characterizationmentioning

confidence: 99%

Recent results for concentrator photovoltaics in Japan

Yamaguchi

Takamoto

Araki

et al. 2016

Jpn. J. Appl. Phys.

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We summarize the Europe-Japan Collaborative Research Project on Concentrator Photovoltaics (CPV); NGCPV Project (a New Generation of Concentrator PhotoVoltaic cells, modules and systems). The aim of this project was to accelerate the move to very high efficiency and lower cost CPV technologies and to enhance the widespread deployment of CPV systems. Seven European partners and nine Japanese partners have contributed to this international collaboration. The following objectives have been reached: 1) a CPV cell with InGaP/GaAs/InGaAs three-junction world-record efficiency of 44.4% has been developed by Sharp, 2) 50 kW and 15 kW CPV plant operations with an average DC efficiency of 27.8% have been demonstrated in Spain (since mid-2012), 3) a new "Intrepid" CPV module with 31.3% efficiency has been developed by Daido Steel, 4) standard measurement of CPV cells has been established by FhG-ISE and AIST, and 46.0% efficiency has been confirmed for the direct-bonded GaInP/GaAs/GaInAsP/GaInAs four-junction solar cell under this project, 5) the fundamental research on novel materials and structures for CPV has also been conducted.

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“…This illumination is asymmetric from one hemisphere, allowing the use of an external confining cavity in the other hemisphere to efficiently collect the light reflected by the grid lines and the semiconductor surface of the triple junction cell. The Fresnel-Köhler families for HCPV (named FK, XRK, XXRK, F-RXI) have been introduced by LPI in the recent years [12][13][14][15], as novel highperformance concentrators that provide not only high concentration and high acceptance angles (i.e., high CAP), but also excellent uniformity of illumination on the square cell without the effects of chromatic aberration on the cell. Particularly, the free-form RXI has achieved the highest CAP reported to date for refractive POE's [15].…”

Section: Fresnel-rxi Köhler Concentratormentioning

confidence: 99%

“…Thirdly, there are no optical surfaces in contact with the cell rim, which differs from other traditional HCPV secondary optics (such as prism homogenizers). This makes the encapsulation of the cells much easier and more robust, since there is no threat of light loss due to meniscus effects by the silicone rubber coupler), and therefore more suitable for high-yield in mass production [13].…”

Section: Fresnel-rxi Köhler Concentratormentioning

confidence: 99%

Ultra-High Efficiency, High-Concentration PV System Based On Spectral Division Between GaInP∕GaInAs∕Ge And BPC Silicon Cells

Benı́tez¹,

Mohedano²,

Buljan³

et al. 2011

AIP Conference Proceedings

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Abstract.A novel HCPV nonimaging concentrator concept with high concentration (>500x) is presented. It uses the combination of a commercial concentration GaInP/GaInAs/Ge 3J cell and a concentration Back-Point-Contact (BPC) concentration silicon cell for efficient spectral utilization, and external confinement techniques for recovering the 3J cell's reflection. The primary optical element (POE) is a flat Fresnel lens and the secondary optical element (SOE) is a free-form RXI-type concentrator with a band-pass filter embedded it, both POE and SOE performing Köhler integration to produce light homogenization. The band-pass filter sends the IR photons in the 900-1200 nm band to the silicon cell. Computer simulations predict that four-terminal terminal designs could achieve ~46% added cell efficiencies using commercial 39% 3J and 26% Si cells. A first proof-of concept receiver prototype has been manufactured using a simpler optical architecture (with a lower concentration, ~100x and lower simulated added efficiency), and experimental measurements have shown up to 39.8% 4J receiver efficiency using a 3J with peak efficiency of 36.9%.

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High performance Fresnel-based photovoltaic concentrator

Cited by 190 publications

References 2 publications

Ventana{trade mark, serif} power train features and performance

Ventana{trade mark, serif} power train features and performance

Recent results for concentrator photovoltaics in Japan

Ultra-High Efficiency, High-Concentration PV System Based On Spectral Division Between GaInP∕GaInAs∕Ge And BPC Silicon Cells

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