Non-uniform illumination in concentrating solar cells

Baig, Hasan; Heasman, KC

doi:10.1016/j.rser.2012.06.020

Cited by 235 publications

(112 citation statements)

References 98 publications

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“…Also, the borders of the solar cell are illuminated with less irradiation (around a third of the total solar cell area with less than 200 suns). This may have some negative impact on the Fill Factor of the solar cell and on its efficiency due to the increase in its series resistance [14]. This problem may be reduced by a deeper optimization of the TOE in future works.…”

Section: Anal S S Of Resultsmentioning

confidence: 99%

Investigating the optical performance of Cassegrainian systems at ultra-high concentrations

Ferrer‐Rodríguez¹,

Férnández²,

Almonacid³

et al. 2016

AIP Conference Proceedings

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Abstract.A Cassegrainian optical design reaching ultra-high concentration fluxes (more than 1000 suns) is presented. The system is based on the use of four independent off-axis pairs of parabolic-hyperbolic reflectors that concentrate sunrays onto a central receiver (TOE, tertiary optical element) which works as a Köhler integrator. This design reaches an effective concentration ratio simulated of 1682 suns while using relative small mirrors. The acceptance angle characteristic is analyzed in terms of both the detailed ray tracing on the TOE and the irradiance pattern on the solar cell for a misalignment situation near to the acceptance angle of the design, which is 0.61º.

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Section: Anal S S Of Resultsmentioning

confidence: 99%

Investigating the optical performance of Cassegrainian systems at ultra-high concentrations

Ferrer‐Rodríguez¹,

Férnández²,

Almonacid³

et al. 2016

AIP Conference Proceedings

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show abstract

“…Concentration of solar light into a small area, increase in the energy absorption, and layered structure of the multi-junction cells result in significant temperature increase during the cell's operation [16]. The increase in the PV cell temperature negatively affects its power conversion efficiency, and it can damage the solar cell over time [17].…”

Section: Introductionmentioning

confidence: 99%

Thermal Management of Concentrated Multi-Junction Solar Cells with Graphene-Enhanced Thermal Interface Materials

2017

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Abstract:We report results of experimental investigation of temperature rise in concentrated multi-junction photovoltaic solar cells with graphene-enhanced thermal interface materials. Graphene and few-layer graphene fillers, produced by a scalable environmentally-friendly liquid-phase exfoliation technique, were incorporated into conventional thermal interface materials. Graphene-enhanced thermal interface materials have been applied between a solar cell and heat sink to improve heat dissipation. The performance of the multi-junction solar cells has been tested using an industry-standard solar simulator under a light concentration of up to 2000 suns. It was found that the application of graphene-enhanced thermal interface materials allows one to reduce the solar cell temperature and increase the open-circuit voltage. We demonstrated that the use of graphene helps in recovering a significant amount of the power loss due to solar cell overheating. The obtained results are important for the development of new technologies for thermal management of concentrated photovoltaic solar cells.

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“…As we all know, concentrator optics, shape errors of concentrator profile, improper tracking, mechanical failures and spectral response can result in non-uniform illumination, which will affect many characteristics of solar cell tremendously, such as equivalent circuit, power efficiency, temperature distribution, lifetime and so on. [6] Franklin and Coventry [7] studied the effects of non-uniformity on the I-V characteristics of the solar cell both numerically and experimentally. They also demonstrated I-V characteristics differing from that of the reference cell at the same number of suns because of different losses in the metal grid [8].…”

Section: Introductionmentioning

confidence: 99%

Electrical Performance Prediction of Line-Focus Fresnel Concentrating PV Module Based on Matlab Algorithm

Zhang¹,

Li²,

Yao³

et al. 2017

IJESD

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Abstract-Line-focus Fresnel concentrating PV module can improve the power efficiency because of concentration ratio growing. But there is another problem which non-uniform illumination can influence electrical performance parameters, such as short-circuit current Isc, open-circuit voltage Voc, fill factor FF and power efficiency η. How to assess the electric performance of non-uniform PV module is becoming an awkward problem. The whole equivalent circuit, including the darker and brighter PV parts, was analyzed. And electric performance forecasting algorithm was designed by MATLAB software according to equivalent circuit and basic principle of solar cell. In the end, actual electric performance of Line-focus Fresnel concentrating PV module was characterized by SourceMeter ○ R instrument. The characterization shows that actual testing results were in accordance with forecasting algorithm.

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Non-uniform illumination in concentrating solar cells

Cited by 235 publications

References 98 publications

Investigating the optical performance of Cassegrainian systems at ultra-high concentrations

Investigating the optical performance of Cassegrainian systems at ultra-high concentrations

Thermal Management of Concentrated Multi-Junction Solar Cells with Graphene-Enhanced Thermal Interface Materials

Electrical Performance Prediction of Line-Focus Fresnel Concentrating PV Module Based on Matlab Algorithm

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