Regional soiling stations for PV: Soling loss analysis

TamizhMani, GovindaSamy; King, Bruce H.; Venkatesan, Arjun K.; Deline, Christopher A; Pavgi, Ashwini; Tatapudi, Sai; Kuitche, Joseph; Chokor, Abbas; Asmar, Mounir El

doi:10.1109/pvsc.2016.7749922

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…This increased tilt enhances the rear-side albedo light collection, consistent with previous studies [11], [14]. The higher tilt angle of BiSN make them more resistant to soiling compared to monofacial ones, since the soiling loss reduces with increasing tilt angle [60]. Reduced soiling loss will further enhance the bifacial gain of BiSN relative to MonoSN in the field.…”

Section: Csupporting

confidence: 87%

Optimization and performance of bifacial solar modules: A global perspective

et al. 2018

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With the rapidly growing interest in bifacial photovoltaics (PV), a worldwide map of their potential performance can help assess and accelerate the global deployment of this emerging technology. However, the existing literature only highlights optimized bifacial PV for a few geographic locations or develops worldwide performance maps for very specific configurations, such as the vertical installation. It is still difficult to translate these location-and configurationspecific conclusions to a general optimized performance of this technology. In this paper, we present a global study and optimization of bifacial solar modules using a rigorous and comprehensive modeling framework. Our results demonstrate that with a low albedo of 0.25, the bifacial gain of groundmounted bifacial modules is less than 10% worldwide. However, increasing the albedo to 0.5 and elevating modules 1 m above the ground can boost the bifacial gain to 30%. Moreover, we derive a set of empirical design rules, which optimize bifacial solar modules across the world, and provide the groundwork for rapid assessment of the location-specific performance. We find that ground-mounted, vertical, east-west-facing bifacial modules will outperform their south-north-facing, optimally tilted counterparts by up to 15% below the latitude of 30 o , for an albedo of 0.5. The relative energy output is reversed of this in latitudes above 30 o . A detailed and systematic comparison with data from Asia, Africa, Europe, and North America validates the model presented in this paper. An online simulation tool (https://nanohub.org/tools/pub) based on the model developed in this paper is also available for a user to predict and optimize bifacial modules in any arbitrary location across the globe.Here we will present four tables of global maps summarizing the optimization and performance (i.e., tilt angle, azimuth angle, annual energy yield, and bifacial gain) for a bifacial solar module with different deployment scenarios (i.e., elevation and albedo).

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Section: Csupporting

confidence: 87%

Optimization and performance of bifacial solar modules: A global perspective

et al. 2018

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“…A soiling ratio of 0 occurs if soiling blocks all the sunlight from reaching the cell (100% soiling loss). Indexes similar to the soiling ratio, such as the Cleanness Index ( Guo et al., 2015 ; Javed et al., 2017a ), the Soiling Loss Factor ( Tamizhmani et al., 2016 ), and the Soiling Factor ( Rodrigo et al., 2020 ), can also be found in literature. All these indexes are based on the same concept as the r s : the ratio of the electrical output of a PV device to the output of the same device in clean conditions.…”

Section: Soiling Metricsmentioning

confidence: 99%

Monitoring photovoltaic soiling: assessment, challenges, and perspectives of current and potential strategies

et al. 2021

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Soiling is the process whereby dirt, dust, and organic/inorganic contaminants deposit on the surface of a photovoltaic (PV) module. It causes significant economic losses and can have a substantial impact on the expansion of photovoltaic technologies for energy generation. The first step to address soiling adequately is monitoring, as soiling mitigation has to be tailored to the specific conditions of each PV system and no universally valid strategy exists. The main focus of this study is to assess the current state of the art in soiling monitoring, in order to help the community better understand the needs and the challenges in this area. The potentials and the limitations of each monitoring method are discussed thoroughly in the paper, with the support of original experimental data. An estimation of the future soiling monitoring market trends is also presented, with a forecasted need for tens of thousands of new soiling monitors every year.

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