author = "Askins, Stephen"

Encontrado 64 documentos, página mostrada 1 de 7

Atmospheric parameters, spectral indexes and their relation to CPV spectral performance

Description: Air Mass and atmosphere components (basically aerosol (AOD) and precipitable water (PW)) define the absorption of the sunlight that arrive to Earth. Radiative models such as SMARTS or MODTRAN use these parameters to generate an equivalent spectrum. However, complex and expensive instruments (as AERO...
Language(s): Inglés

Evaluation of misalignments within a concentrator photovoltaic module by the module optical analyzer: a case of study concerning temperature effects on the module performance

Description: Instituto de Energía Solar, Universidad Politécnica de Madrid (IES-UPM) has developed a method [referred to as the luminescence inverse (LI) method] and equipment [called module optical analyzer (MOA)] to fast measure the optical-angular properties of a CPV module without illumination system nor mod...
Language(s): Inglés

Characterizing CPV in a Lattice Mismarched World

Description: In this work, we discuss difficulties we have faced while characterizing non-LM-Ge based CPV modules at the Instituto de Energía Solar, including: 1. For MJ cells with a 1eV bottom, bottom sub-cells may be current matched to the other two cells at reference spectrum. 2.In the case of metamorphic sel...
Language(s): Inglés

Evaluation of misalignments within a concentrator photovoltaic module by the module optical analyzer: a case of study concerning temperature effects on the module performance

Description: Instituto de Energía Solar, Universidad Politécnica de Madrid (IES-UPM) has developed a method [referred to as the luminescence inverse (LI) method] and equipment [called module optical analyzer (MOA)] to fast measure the optical-angular properties of a CPV module without illumination system nor mod...
Language(s): Inglés

Characterizing CPV in a Lattice Mismarched World

Description: In this work, we discuss difficulties we have faced while characterizing non-LM-Ge based CPV modules at the Instituto de Energía Solar, including: 1. For MJ cells with a 1eV bottom, bottom sub-cells may be current matched to the other two cells at reference spectrum. 2.In the case of metamorphic sel...
Language(s): Inglés

Atmospheric parameters, spectral indexes and their relation to CPV spectral performance

Description: Air Mass and atmosphere components (basically aerosol (AOD) and precipitable water (PW)) define the absorption of the sunlight that arrive to Earth. Radiative models such as SMARTS or MODTRAN use these parameters to generate an equivalent spectrum. However, complex and expensive instruments (as AERO...
Language(s): Inglés

Methodology of quantifying curvature of Fresnel lenses and its effect on CPV module performance

Description: Fresnel lenses used as primary optics in concentrating photovoltaic modules may show warping produced by lens manufacturing or module assembly (e.g., stress during molding or weight load) or due to stress during operation (e.g., mismatch of thermal expansion between different materials). To quantify...
Language(s): Inglés

Characterization of CPV arrays based on differences on their thermal resistances

Description: Thermal characterization of Concentrating Photovoltaics (CPV) modules and Arrays is needed to determine their performance and modelling of energy forecast. Module-ambient thermal resistance is easily obtained from its definition but the cell-module thermal resistant needs to be estimated from indire...
Language(s): Inglés

A novel achromatic Fresnel lens for high concentrating photovoltaic systems

Description: In this paper we present a novel manufacturing method to produce achromatic Fresnel lenses for photovoltaic application. These achromatic lenses are capable of reaching a concentration factor three times higher than that attained by a conventional Silicone-on-Glass (SOG) Fresnel lens. The manufactur...
Language(s): Inglés

A review of the promises and challenges of micro-concentrator photovoltaics

Description: Micro concentrator photovoltaics (micro-CPV) is an unconventional approach for developing high-efficiency low-cost PV systems. The micrifying of cells and optics brings about an increase of efficiency with respect to classical CPV, at the expense of some fundamental challenges at mass production. Th...
Language(s): Inglés

Encontrado 64 documentos, página mostrada 1 de 7

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