Spectral Correction of CPV Modules Equipped with GaInP/GaInAs/Ge Solar Cells and Fresnel Lenses

Theristis, Marios; Férnández, Eduardo F.; Almonacid, Florencia; Georghiou, George E.

doi:10.3390/app7080842

Cited by 7 publications

(2 citation statements)

References 11 publications

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“…The studies, which attempted to solve this problem in an analytical way [27], led to positive verification of the adopted models. The problem that should be addressed in the future is the issue of economic viability of this type of solutions.…”

Section: Discussionmentioning

confidence: 99%

Simulation Model of PV Module Built from Point-Focusing Fresnel Radiation Concentrators and Three-Junction High-Performance Cells

Sarniak

2022

Applied Sciences

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The silicon photovoltaic modules that dominate the market today are constantly being modified, but at the same time, the search for new, more efficient design solutions is underway. The study examined a less popular photovoltaic module built from point-focusing Fresnel radiation concentrators and high-efficiency three-junction cells. The advantage of this type of module is its high overall efficiency, exceeding 30%. The disadvantage is that they require biaxial precision tracking mechanisms because even a small deviation of the direction of direct solar radiation from the perpendicular to the module’s surface causes a large and abrupt drop in efficiency. This type of photovoltaic module structure is often also marked with the symbol C3PV. A mathematical model and simulation calculations were carried out in the Matlab/Simulink package for the C3PV module—the CX-75/200 model based on the “Solar Cell” component. The concentration of direct solar radiation was taken into account. For the module under consideration, experimental and simulation results show the necessity of accurate positioning concerning the direction of solar radiation—deviation of the radiation angle by about 5° causes a very high power loss (by about 92%).

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Section: Discussionmentioning

confidence: 99%

Simulation Model of PV Module Built from Point-Focusing Fresnel Radiation Concentrators and Three-Junction High-Performance Cells

Sarniak

2022

Applied Sciences

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“…CPV systems use Multi-Junction (MJ) solar cells [4], much more efficient than the silicon cells [5] used in the traditional photovoltaic modules [6]. However, the CPV technology must overcome the technical and economic challenges to achieve success in the energy market [7]. New configurations, components and materials are still being created and tested [8] to decrease the CPV system cost.…”

Section: Introductionmentioning

confidence: 99%

Experimental Comparison between Spherical and Refractive Optics in a Concentrating Photovoltaic System

Renno

2021

Energies

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Since there are not standard configurations of the Concentrating Photovoltaic (CPV) systems, several types of optics are designed and analyzed. In this paper, the optical performances of a spherical mirror and a commonly used Fresnel lens of the same diameter are compared, highlighting their impact on the CPV system energy performance. First, the absolute and percentual variation trends of optical concentration factor and optical efficiency as function of the distance between each optical system and receiver are analyzed. The concentration levels obtained by means of the spherical mirror are much higher than the Fresnel lens, with maximum values of optical efficiency equal to 72.8% and 24.1%, respectively. The analysis of the concentration reduction due to a solar-tracking failure has also allowed the estimation of the acceptance angle, thus observing that the spherical mirror requires a less accurate solar tracker with respect to the Fresnel lens, especially if a secondary optics is adopted. As for the energy comparison, the spherical mirror allows increase of the Triple-Junction (TJ) cell temperature up to about 65 °C higher than the environmental temperature and to reach an electrical power of about 15 W in correspondence of a concentrated solar radiation of 470 kW/m2. Finally, the deviation between the cumulative electric energy produced by the TJ cell in the cases of correct and incorrect solar tracking and for the configurations with and without secondary optics has been also evaluated for both the optics. The equations experimentally obtained in this paper represent a more accurate tool to describe the physical phenomenon in comparison with the equations theoretically obtained for similar CPV systems. The results can be used to design a real CPV system that adopts a Fresnel lens or a spherical mirror. The equations experimentally obtained in this paper represent a more accurate tool to describe the physical phenomenon in comparison with the equations theoretically obtained for similar CPV systems. The results can be used to design a real CPV system that adopts a Fresnel lens or a spherical mirror.

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Performance of a concentrating photovoltaic monomodule under real operating conditions: Part II – Power rating

Theristis

Férnández

Georghiou

et al. 2018

Energy Conversion and Management

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Spectral Correction of CPV Modules Equipped with GaInP/GaInAs/Ge Solar Cells and Fresnel Lenses

Cited by 7 publications

References 11 publications

Simulation Model of PV Module Built from Point-Focusing Fresnel Radiation Concentrators and Three-Junction High-Performance Cells

Simulation Model of PV Module Built from Point-Focusing Fresnel Radiation Concentrators and Three-Junction High-Performance Cells

Experimental Comparison between Spherical and Refractive Optics in a Concentrating Photovoltaic System

Performance of a concentrating photovoltaic monomodule under real operating conditions: Part II – Power rating

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