Improving performances of Fresnel CPV systems: Fresnel-RXI Köhler concentrator

Buljan, Marina; Miñano, Juan C.; Benı́tez, Pablo; Mohedano, Rubén; Chaves, Julio

doi:10.1364/oe.22.00a205

Cited by 19 publications

(11 citation statements)

References 9 publications

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“…It leads to a CAP ¼ 0.85, the highest reported for flat Fresnel POEs to the authors' knowledge. 46 Recently, a Fresnel-Köhler of ninefold was developed 47 [shown in Fig. 5(d)].…”

Section: Multifold Köhler Concentratorsmentioning

confidence: 99%

Recent trends in concentrated photovoltaics concentrators’ architecture

et al. 2014

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Abstract. The field of concentrated photovoltaics (CPV) has met some remarkable advances in recent years. The continuous increase in conversion efficiency of multijunction solar cells and new advancements in optics have led to new demands and opportunities for optical design in CPV. This paper is a mini-review on current requirements for CPV optical design, and it presents some of the main trends in recent years on CPV systems architecture. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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“…It leads to a CAP ¼ 0.85, the highest reported for flat Fresnel POEs to the authors' knowledge. 46 Recently, a Fresnel-Köhler of ninefold was developed 47 [shown in Fig. 5(d)].…”

Section: Multifold Köhler Concentratorsmentioning

confidence: 99%

Recent trends in concentrated photovoltaics concentrators’ architecture

et al. 2014

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“…Recently, Zhuang and Yu applied simplex algorithm to attain optimum prism displacements of a Fresnel lens, leading to a uniformity irradiance on the solar cell with broad solar spectrum [11]. Buljan et al achieved high uniformity and chromatic balance for CPV system by using a dielectric solid RXI-type SOE in a CPV system comprising a flat Fresnel lens [12]. Lv et al analyzed the performance of a CPV module considering the temperature-dependent model of the optical elements and the solar cell.…”

Section: Introductionmentioning

confidence: 99%

“…The square solar cell is placed on the focal plane of the POE, of which the focal length is 130.1 mm. The Fresnel lens is made by silicone-on-glass with urethane prism grooves of pitch 0.2 mm on a 2 mm thick flat BK7 glass, and the internal transmittance of BK7 is assumed as 0.99 in the simulation [12]. The commercial package, ASAP (Breault Research Organization, Inc., Tucson, AZ, USA), was applied to perform the optical simulations in this research.…”

Section: Introductionmentioning

confidence: 99%

Design of the Secondary Optical Elements for Concentrated Photovoltaic Units with Fresnel Lenses

Chen

Chiang

2015

Applied Sciences

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Abstract:The goal of this presented study was to determine the optimum parameters of secondary optical elements (SOEs) for concentrated photovoltaic (CPV) units with flat Fresnel lenses. Three types of SOEs are under consideration in the design process, including kaleidoscope with equal optical path design (KOD), kaleidoscope with flat top surface (KFTS), and open-truncated tetrahedral pyramid with specular walls (SP). The function of using a SOE with a Fresnel lens in a CPV unit is to achieve high optical efficiency, low sensitivity to the sun tracking error, and improved uniformity of irradiance distribution on the solar cell. Ray tracing technique was developed to simulate the optical characteristics of the CPV unit with various design parameters of each type of SOE. Finally, an optimum KOD-type SOE was determined by parametric design process. The resulting optical performance of the CPV unit with the optimum SOE was evaluated in both single-wavelength and broadband simulation of solar spectrum.

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“…A comparative study of the designs discussed in this paper and those of classical designs is also presented in Section 4. More details of these devices can be found in [4,[12][13][14]. CPV concentrators using Köhler array schemes but with a mirror as the POE can be found in [15].…”

Section: Introductionmentioning

confidence: 99%

Free-form optics for Fresnel-lens-based photovoltaic concentrators

Miñano¹,

Benı́tez²,

Zamora³

et al. 2013

Opt. Express

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Abstract:The Concentrated Photovoltaics (CPV) promise relies upon the use of high-efficiency triple-junction solar cells (with proven efficiencies of over 44%) and upon high-performance optics that allow for high concentration concurrent with relaxed manufacturing tolerances (all key elements for low-cost mass production). Additionally, uniform illumination is highly desirable for efficiency and reliability reasons. All of these features have to be achieved with inexpensive optics containing only a few (in general no more than 2) optical elements. In this paper we show that the degrees of freedom using free-forms allow the introduction of multiple functionalities required for CPV with just 2 optical elements, one of which is a Fresnel lens.

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Improving performances of Fresnel CPV systems: Fresnel-RXI Köhler concentrator

Cited by 19 publications

References 9 publications

Recent trends in concentrated photovoltaics concentrators’ architecture

Recent trends in concentrated photovoltaics concentrators’ architecture

Design of the Secondary Optical Elements for Concentrated Photovoltaic Units with Fresnel Lenses

Free-form optics for Fresnel-lens-based photovoltaic concentrators

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