Multi-bandgap high efficiency converter (RAINBOW)

Lewis, C.R.; Phillips, W. M.; Shields, V.; Stella, P. M.; Bekey, I.

doi:10.1109/iecec.1997.659222

Cited by 7 publications

(7 citation statements)

References 7 publications

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“…Based on the various spectrum-splitting techniques proposed for solar cells [95][96][97][98], researchers have developed similar techniques for the hybrid system. Five main spectrumsplitting systems are discussed as follows:…”

Section: Optical Managementmentioning

confidence: 99%

“…Based on the various spectrum-splitting techniques proposed for solar cells [ 95 , 96 , 97 , 98 ], researchers have developed similar techniques for the hybrid system. Five main spectrum-splitting systems are discussed as follows: Prisms [ 99 ]: refractively disperse sunlight and concentrate different portions of the spectrum onto PVC ( Figure 6 a); Filters [ 100 , 101 ]: only transmit radiation of a suitable range to the solar cells and suppress unwanted solar radiation ( Figure 6 b); Luminescent solar concentrators [ 102 , 103 , 104 ]: concentrated sunlight enters the second component.…”

Section: The Optimization Of the Hybrid Systemmentioning

confidence: 99%

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Hybrid Photovoltaic/Thermoelectric Systems for Round-the-Clock Energy Harvesting

Zhang

Gao

2022

Molecules

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Due to their emission-free operation and high efficiency, photovoltaic cells (PVCs) have been one of the candidates for next-generation “green” power generators. However, PVCs require prolonged exposure to sunlight to work, resulting in elevated temperatures and worsened performances. To overcome this shortcoming, photovoltaic–thermal collector (PVT) systems are used to cool down PVCs, leaving the waste heat unrecovered. Fortunately, the development of thermoelectric generators (TEGs) provides a way to directly convert temperature gradients into electricity. The PVC–TEG hybrid system not only solves the problem of overheated solar cells but also improves the overall power output. In this review, we first discuss the basic principle of PVCs and TEGs, as well as the principle and basic configuration of the hybrid system. Then, the optimization of the hybrid system, including internal and external aspects, is elaborated. Furthermore, we compare the economic evaluation and power output of PVC and hybrid systems. Finally, a further outlook on the hybrid system is offered.

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Section: Optical Managementmentioning

confidence: 99%

Section: The Optimization Of the Hybrid Systemmentioning

confidence: 99%

Hybrid Photovoltaic/Thermoelectric Systems for Round-the-Clock Energy Harvesting

Zhang

Gao

2022

Molecules

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“…La Tabla 1 muestra el salto energético (band gap) característico para diversos materiales utilizados en CF de acuerdo con datos conocidos y documentados (Lewis et al, 1997;Saga, 2010;Bücher et al, 1998). Si ahora se considera la irradiancia espectral solar a nivel terrestre (según ASTM G173-03 Reference Spectra Derived from SMARTS v. 2.9.2) que se observa en la Figura 1, se comprueba que para un material de band gap de 1,5 eV (valor intermedio tomado como referencia entre los de los materiales más usuales citados), correspondiente a una longitud de onda de 827 nm, la energía que podría convertir de ese espectro se encuentra graficada en la Figura 2 (curva de trazo negro, "Absorbible por las celdas fotovoltaicas").…”

Section: Fundamentosunclassified

“…Por otra parte, en todo el mundo se estudian materiales, diseños y configuraciones destinados a alcanzar mayor eficiencia de las celdas. Entre estos estudios se destacan la introducción de nuevos materiales orgánicos e inorgánicos y su aplicación en dispositivos de capas múltiples capaces de convertir en electricidad la mayor parte del espectro solar, incluso la radiación próxima a la infrarroja (Parida et al, 2011;Semonin et al, 2012;Razykov et al, 2011;Best Reserch Cell Efficiencies;Landsberg y Markvart 2012;Lewis et al, 1997). Sin embargo, estas mejoras a escala de laboratorio no han contribuido aún al aumento de la eficiencia ya citada de los paneles fotovoltaicos comerciales (Best Reserch Cell Efficiencies; Saga, 2010).…”

Section: Introductionunclassified

Diseño y evaluación de un panel solar fotovoltaico y térmico para poblaciones dispersas en regiones de gran amplitud térmica

Cabezas-Maslanczuk

Franco-Brazes

Fasoli-Tolosa³

2018

IIT

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Se presenta la evaluación de un panel solar diseñado para proveer energía eléctrica y agua caliente en regiones de buena insolación y gran amplitud térmica (clima continental, zonas de altura). El dispositivo propuesto es un panel que actúa a la vez como fotovoltaico y térmico, el que se construye colocando una capa de agua por encima de las celdas solares fotovoltaicas ("matriz fotovoltaica" construida modificando paneles fotovoltaicos comerciales). El agua actúa como refrigerante de las celdas reduciendo las pérdidas en la generación eléctrica producidas por el incremento de la temperatura del panel. Se aprovecha además la complementariedad en cuanto a absorción de energía de las celdas fotovoltaicas y el agua. De este modo es posible proveer electricidad y agua caliente en un dispositivo único, para uso doméstico en regiones de difícil llegada de las redes de provisión de energía, con poblaciones dispersas (no concentradas), ya sea para consumo familiar, puestos de vigilancia, de guardaparques, tanto para instalaciones fijas como portátiles. Se presentan los fundamentos teóricos y los resultados obtenidos con un prototipo de laboratorio instalado en Buenos Aires. Estos resultados se correspondieron con los predichos en los fundamentos teóricos, obteniéndose además de agua caliente, una importante mejora en el rendimiento fotovoltaico. La combinación de ambos efectos conduce a un mejor aprovechamiento del recurso solar. Descriptores: Formas renovables de energía, energía solar, panel solar fotovoltaico y térmico.

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“…Despite of these advantages, the interconnection technique for LMJ solar cell is not optimized yet. In [15] [23], an interconnection technique is proposed where sub cells of same materials are connected in series strings and string of different sub cell materials are connected in parallel to achieve nearly voltage matched interconnection. However, a complete optimal solution with an efficient power electronic solution has not been reported yet.…”

Section: Lmj Solar Cell Interconnectionmentioning

confidence: 99%

Interconnection and optimization issues of multijunction solar cells — A new mitigation approach using switching power converters

Alam

Khan

Imtiaz

2012

2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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A multijunction solar cell can extract higher solar energy compared to a single junction solar cell using the spectrum splitting technique. Extensive research on efficiency enhancement of the solar cells to achieve near theoretical limit is in place. However, there are limited research activities to identify the optimum interconnection methods and necessary power electronics solutions for multijunction solar cell systems. A detailed study to identify the optimum interconnection method for various multijunction solar cells is revealed in this paper. The authors believe that the conducted research in this area is very limited and an effective power electronics solution could substantially improve the efficiency and utilization of a PV power system constructed from multijunction solar cells. A multiple input dc-to-dc boost converter has been used to demonstrate the advantage of the proposed interconnection technique. Both Simulation and experimental results have been attached to show the practicality and the potential benefit of the proposed concept.I.

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Multi-bandgap high efficiency converter (RAINBOW)

Cited by 7 publications

References 7 publications

Hybrid Photovoltaic/Thermoelectric Systems for Round-the-Clock Energy Harvesting

Hybrid Photovoltaic/Thermoelectric Systems for Round-the-Clock Energy Harvesting

Diseño y evaluación de un panel solar fotovoltaico y térmico para poblaciones dispersas en regiones de gran amplitud térmica

Interconnection and optimization issues of multijunction solar cells — A new mitigation approach using switching power converters

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Multi-bandgap high efficiency converter (RAINBOW)

Cited by 7 publications

References 7 publications

Hybrid Photovoltaic/Thermoelectric Systems for Round-the-Clock Energy Harvesting

Hybrid Photovoltaic/Thermoelectric Systems for Round-the-Clock Energy Harvesting

Diseño y evaluación de un panel solar fotovoltaico y térmico para poblaciones dispersas en regiones de gran amplitud térmica

Interconnection and optimization issues of multijunction solar cells &#x2014; A new mitigation approach using switching power converters

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Interconnection and optimization issues of multijunction solar cells — A new mitigation approach using switching power converters