Annual angular reflection losses in PV modules

Martı́n, Nazario; Ruiz, José María Ruiz

doi:10.1002/pip.585

Cited by 74 publications

(29 citation statements)

References 9 publications

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“…This assumption is supported by previous works that describe the losses typically present at a PV system. The soiling losses typically account for 3% [21,22]. The average in verter has a yield 2% lower than the high quaíity in verter that equips the reference system [27], PV generator mismatch and wiring losses can typically be 2% higher than in the reference system [28].…”

Section: Taue3mentioning

confidence: 99%

“…The solar radiation received on the surface of each of the PV generators is estimated using widely accepted solar radiation models [12][13][14]. The estimation of the energy production of the reference system is simulated with a tool developed at IES-UPM and based on widely accepted models, whose details have been described elsewhere [15][16][17][18][19][20][21][22]. The energy performance indicators that are used to assess the technical quality of a particular PV system are obtained by comparing its actual production along a certain period of time with the production of a hypothetical reference system (of the same nominal power, installed at the same location, and oriented the same way) somewhat free of certain kinds of losses.…”

Section: Pv Systems Performancementioning

confidence: 99%

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Review of the performance of residential PV systems in France

Leloux

Narvarte

Trebosc³

2012

Renewable and Sustainable Energy Reviews

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ARTICLE INFO ABSTRACT Keywords:Residential PV system Energy production Performance Ratio Performance Index CIS HIT PI FranceThe main objective of this paper is to review the state of the art of residential PV systems in France. This is done analyzing the operational data of 6868 installations. Three main questions are posed. How much energy do they produce? What level of performance is associated to their production? Which are the key parameters that most influence their quality? During the year 2010, the PV systems in France have produced a mean annual energy of 1163 kWh/kW p . As a whole, the orientation of PV generators causes energy productions to be some 7% inferior to optimally oriented PV systems. The mean Performance Ratio is 76% and the mean Performance Index is 85%. That is to say, the energy produced by a typical PV system in France is 15% inferior to the energy produced by a very high quality PV system. On average, the real power of the PV modules falls 4.9% below its corresponding nominal power announced on the manufacturer's datasheet. A brief analysis by PV modules technology has led to relevant observations about two technologies in particular. On the one hand, the PV systems equipped with heterojunction with intrinsic thin layer (HIT) modules show performances higher than average. On the other hand, the systems equipped with the copper indium (di)selenide (CIS) modules show a real power that is 16% lower than their nominal valué.

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Section: Taue3mentioning

confidence: 99%

Section: Pv Systems Performancementioning

confidence: 99%

Review of the performance of residential PV systems in France

Leloux

Narvarte

Trebosc³

2012

Renewable and Sustainable Energy Reviews

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show abstract

“…Model parameter a r depends on the PV configuration. For examples, a r = 0.136 corresponds to a "air-glass-a-Si:H-Ag" configuration (Martin and Ruiz, 2001) and a r = 0.2 corresponds to a "air-glass" configuration with a moderately soiled surface (Martín and Ruiz, 2005). These two example configurations are shown as the lower and upper bounds in we benchmark the Fraunhofer model with the M&R(a r = 0.173) model, which corresponds to a "air-glass" configuration without soiling (Martin and Ruiz, 2001).…”

Section: Appendix a Reflection Loss Modelsmentioning

confidence: 99%

“…Martín and Ruiz, 2005). Martin and Ruiz (2001) proposed an analytical model which has been validated using experimental data:…”

Section: Appendix a Reflection Loss Modelsmentioning

confidence: 99%

Bidirectional irradiance transposition based on the Perez model

Yang

Ye²,

Nobre

et al. 2014

Solar Energy

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The Perez irradiance model offers a practical representation of solar irradiance by considering the sky hemisphere as a three part geometrical framework, namely, circumsolar disc, horizon band and the isotropic background. Furthermore, the simplified Perez diffuse irradiance model, commonly known as the Perez transposition model, is one of the most widely adopted models in tilted irradiance assessments. Although the set of model coefficients reported by Perez et al. (1990) is often considered to be at an asymptotic level of optimization, later analyses have shown that coefficients which are adjusted to local conditions perform better than the original set.The model coefficients can be adjusted locally based on multiple datasets of diffuse and global irradiance on tilted and horizontal planes. In this paper, we present a different approach to adjust the coefficients, by using only measurements of global irradiance on tilted and horizontal planes from a tropical site, Singapore. A complete set of mathematical solutions to the inverse problem, i.e., converting irradiance from tilt to horizontal is also proposed. The data can then be used to generate irradiance maps from in-plane irradiance measurements at photovoltaic (PV) systems. Such maps are get- * Corresponding author. ting more relevant for PV grid integration due to the variable nature of solar power output. Keywords: Perez model, reference cells, tropical regions, inverse transpositionList of symbols.

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“…2D function Incidence Angle Modifier (IAM) is used to define optical losses, due to angle dependent reflections, from arbitrary optical surfaces of the PV module top layers. IAM value is usually calculated using analytical IAM models such as physical [157], Souka and Safwat [158] or ASHRAE [159], Martin and Ruiz [160] [161] [162], and Sandia [163]. Additionally, IAM of complex surfaces can be calculated by optical software such as TracePro and Zemax to characterise optical properties of the top layer of the PV cell as a 2D function of the incidence angle of the light source [164] and finally be provided as an output for PV software such as PVsyst [165].…”

Section: Bipv Facade Module To Building Scalementioning

confidence: 99%

State-of-the-art review of solar design tools and methods for assessing daylighting and solar potential for building-integrated photovoltaics

Jakica

2018

Renewable and Sustainable Energy Reviews

130

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Solar design can take many different forms across disciplines with different methodologies and goals, ranging from acquiring architectural visual effects to assessing illumination for daylighting and solar radiation potential on building surfaces for PV implementation. Furthermore, a capability of solar design methodologies and tools to accurately and time efficiently simulate light phenomena can greatly influence performance results and design decisions. This is especially important in complex cases such as dense urban settings with the significant surface shadowing, and vertical facades including daylighting devices and photovoltaics. Consequently, choosing a suitable approach and tool for each design phase is essential for achieving unique design and performance goals. This paper was carried out within the framework of IEA-PVPS Task 15 -BIPV and it aims to facilitate this decision for all parties involved in solar design process. Here presented, is an overview of almost 200 solar design tools, analyzing their numerous features regarding accuracy, complexity, scale, computation speed, representation as well as building design process integration in about 50 2D/3D, CAD/CAM and BIM software environments. Furthermore, tools from various fields have been analysed in a broad interdisciplinary context of solar design with a particular attention for being used for Daylighting and Building-Integrated Photovoltaics (BIPV) purposes. This approach should open many new perspectives on a potentially wider multidisciplinary usage and interpretation of solar design tools, sometimes well beyond their initial scope of work.

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Annual angular reflection losses in PV modules

Cited by 74 publications

References 9 publications

Review of the performance of residential PV systems in France

Review of the performance of residential PV systems in France

Bidirectional irradiance transposition based on the Perez model

State-of-the-art review of solar design tools and methods for assessing daylighting and solar potential for building-integrated photovoltaics

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