A Benchmark and Validation of Bifacial PV Irradiance Models

Asgharzadeh, Amir; Toor, Fatima; Bourne, B. C.; Anoma, Marc Abou; Hoffman, A. D.; Chaudhari, Chetan; Bapat, Sushrut; Richard, Perkins; Dan, Cohen; Kimball, Gregory M.; Riley, Dan

doi:10.1109/pvsc40753.2019.8981272

Cited by 17 publications

(7 citation statements)

References 5 publications

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“…where α is the albedo factor and GHI is the global horizontal irradiation which decomposed into diffuse and direct part [18]. There are commercial software products such as PVSYST, PV*Sol, Helioscope, and PV Watts asses the PV system's performance using the VF approach, while RADIANCE and COMSOL software are used for RT approach [25], [32]- [34].…”

Section: Bifacial Pv Irradiance Modellingmentioning

confidence: 99%

An optimum location of on-grid bifacial based photovoltaic system in Iraq

Shakir

Yousif

Mahmood

2022

IJECE

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Bifacial photovoltaic (PV) module can gain 30% more energy compared to monofacial if a suitable location were chosen. Iraq (a Middle East country) has a variable irradiation level according to its geographic coordinates, thus, the performance of PV systems differs. This paper an array (17 series, 13 parallel) was chosen to produce 100 kWp for an on-grid PV system. It investigates the PV system in three cities in Iraq (Mosul, Baghdad, and Basrah). Effect of albedo factor, high and pitch of the bifacial module on energy yield have been studied using PVsyst (software). It has been found that the effect is less for a pitch greater than 6 m. The energy gained from bifacial and monofacial PV system module in these cities shows that Mosul is the most suitable for installing both PV systems followed by Baghdad and lastly Basrah. However, in Basrah, the bifacial gain is 12% higher in the energy than monofacial as irradiation there is higher than the other locations, especially for elevation above 1.5 m. Moreover, the cost of bifacial array is 7.23% higher than monofacial, but this additional cost is acceptable since the bifacial gain is about 11.3% higher energy compared to the monofacial.

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Section: Bifacial Pv Irradiance Modellingmentioning

confidence: 99%

An optimum location of on-grid bifacial based photovoltaic system in Iraq

Shakir

Yousif

Mahmood

2022

IJECE

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“…The literature contains comparisons of small-area irradiance sensors for RPOA measurements [15] - [18], works that used monofacial reference modules for frontside plane-of-array irradiance (GPOA) measurements [19] [20], and recently, an investigation of bifacial reference panels for effective irradiance monitoring [21].…”

Section: Introductionmentioning

confidence: 99%

Measuring Irradiance With Bifacial Reference Panels

Riedel

Bartholomaus

Vedde

et al. 2022

IEEE J. Photovoltaics

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The heterogenous nature and spectral distribution of rear plane-of-array irradiance RPOA presents challenges when measured by small-area sensors such as pyranometers. Bifacial reference modules serving as largearea sensors can simplify irradiance monitoring because their electrical response follows that of the power generating modules in an array. This article compares RPOA and effective irradiance GE measured by calibrated reference modules against three commonly used small-area sensors including pyranometers, reference cells, and photodiodes. A technology-matched monofacial module is mounted side-by-side with the bifacial reference to decouple effective irradiance measurements into front and backside contributions. The results show that RPOA and GE measurements made with reference panels have the best correlation to reference cells. The mean absolute errors between the two measurement approaches are 9% relative, 4 W/m 2 absolute for RPOA and 4% relative, 7 W/m 2 absolute for GE. When GE measurements from the four sensor types are used to predict string-level power, the reference panel measurements show a 3.4% prediction error, which is comparable to that achieved when using GE measurements from pyranometers (3.0%) and reference cells (2.9%) thereby suggesting that reference modules can be used to accurately measure RPOA and GE in bifacial systems.

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“…These become especially important for cells incorporating nanophotonic modifications [7] which promote light redirection [8] or trapping [9]. Various ray-tracing algorithms have been developed to understand the albedo-dependent PV output [10,11,12,13]. Yet an extensive study on the effect of the spectro-angular albedo on bifacial modules is missing.…”

Section: Introductionmentioning

confidence: 99%

Output Enhancement of Bifacial Solar Modules Under Diffuse and Specular Albedo

Pal

Saive

2021

2021 IEEE 48th Photovoltaic Specialists Conference (PVSC)

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We present an albedo-centric reverse-ray tracing software to model the influence of albedo surfaces with complex spectro-angular reflectance (i.e. diffuse, glossy, specular, and metamaterials) on the short-circuit current density of a bifacial module. We find that for a silicon heterojunction module, a diffuse albedo leads to higher output and is more robust to self-shading and changes in orientation than a specular reflector. Our approach enables detailed and accurate albedo-dependent output calculation for various known and even exotic reflectors. Such a methodology can be used to design optimal reflectors and determine optimal configurations.

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A Benchmark and Validation of Bifacial PV Irradiance Models

Cited by 17 publications

References 5 publications

An optimum location of on-grid bifacial based photovoltaic system in Iraq

An optimum location of on-grid bifacial based photovoltaic system in Iraq

Measuring Irradiance With Bifacial Reference Panels

Output Enhancement of Bifacial Solar Modules Under Diffuse and Specular Albedo

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