Evaluation of Failure Modes for Photovoltaic Modules in Arid Climatic Zones in Brazil

Cassini, Denio Alves; Costa, Suellen Caroline Silva; Diniz, Antônia Sônia Alves Cardoso; Kazmerski, Lawrence L.

doi:10.1109/pvsc43889.2021.9518798

Cited by 3 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Focusing on the degradation in terms of power for both modules during the entire first year, the single junction amorphous module has degraded a bit more than 3.02% whereas the micromorph module has experienced an annual power drop close to 2.29%. In both cases, these rates are in agreement to those summarized in Table 1, except for those works 7,16 where the period of study is relatively short (30 months or less). This fact suggests that studies on amorphous silicon technologies require long exposure periods of several years in order to overpass stabilization and obtain realistic degradation rates.…”

Section: Discussionsupporting

confidence: 87%

“…Further research is required to gain a deeper knowledge about the degradation of amorphous silicon‐based modules; this will allow to reduce the uncertainty affecting the estimations of the energy delivered by PV plants based on this technology. As it can be argued from Table 1, single junction amorphous silicon commonly shows degradation rates in the range of 2.0±0.3% per year, 6,11,14,17,20 although lower 6,9,12,18 and higher values 7,16 are reported, reaching even more than 6%/year. In general, a similar dispersion is found for the degradation rates estimated for micromorph modules and also similar or slightly lower values, 4,8,10,13,15,17,19 with a maximum rate around 4%/year.…”

Section: Introductionmentioning

confidence: 88%

“…The set of equations defined in the standard has been simplified by defining a new translation parameter ψ ¼ ω Á ϕ and by substituting the values of G 4 and T 4 in Equations ( 3) and ( 4). This leads to Equations ( 5) and (6), which are easily solved by Equation (7). In the case of the example of Figure 1, the solution is ϕ=0.5 and ψ=0.25, and then ω ¼ ψ=ϕ= 0.5.…”

Section: Introductionmentioning

confidence: 99%

“…3 Degradation processes of amorphous silicon PV modules have been analyzed in many papers available in the literature. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] The dispersion of the degradation rates documented by different authors is significantly wider than the dispersion observed on crystalline PV modules, even though there are comparatively many more works addressing the degradation of the latter family of technology, as shown in the comprehensive review conducted by Jordan et al, 21 stating a range box for the long-term annual degradation rate of amorphous based modules manufactured in the last decade between 0.8 and 2%/year. 21 A summary of annual degradation rates, in terms of power, reported in recent articles can be found in Table 1.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Analysis of the degradation of amorphous silicon‐based modules after 11 years of exposure by means of IEC60891:2021 procedure 3

Piliougine

Sánchez-Friera

Petrone

et al. 2022

Progress in Photovoltaics

View full text Add to dashboard Cite

The degradation of two amorphous silicon‐based photovoltaic (PV) modules, namely, of single junction amorphous silicon (a‐Si) and of micromorph tandem (a‐Si/ μ‐Si), after 11 years of exposure in the south of Spain is analyzed. Their I‐V curves were measured outdoors to study the changes of the electrical parameters in the course of three different periods: during the initial days of exposure, during the first year, and in the subsequent 10‐year period. The translation of the curves to an identical set of operating conditions, which enables a meaningful comparison, was done by the different correction procedures described in the standard IEC60891:2021, including the procedure 3, which does not require the knowledge of module parameters, whose values are typically not available. The annual power degradation rates over the entire 11‐year period are 1.12% for the a‐Si module, which is 3.02% for the first year, and 0.98% for the a‐Si/ normalμ‐Si, which is 2.29% for the initial year.

show abstract

Section: Discussionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of the degradation of amorphous silicon‐based modules after 11 years of exposure by means of IEC60891:2021 procedure 3

Piliougine

Sánchez-Friera

Petrone

et al. 2022

Progress in Photovoltaics

View full text Add to dashboard Cite

show abstract

“…Visual inspections show some minor conditions of corrosion on contact areas. However, more importantly, the TCO shows discoloration in some areas on the edges where there have been non-uniform temperatures reported during operation [66]. The visual inspections of the CIGSSe modules did not report any corrosion, contact, or delamination issues.…”

Section: Amorphous Silicon:hydrogen and Copper (Indium Gallium) Sulfi...mentioning

confidence: 90%

Soiling Spectral and Module Temperature Effects: Comparisons of Competing Operating Parameters for Four Commercial PV Module Technologies

et al. 2022

View full text Add to dashboard Cite

The choice of a particular PV technology for best performance is sometimes based upon a single factor or single operating condition. However, many parameters have functionalities that oppose each under actual operating conditions. In this paper, the comparisons of different PV module technologies under moderate environmental conditions (Tropical Climate Zone, Belo Horizonte, Brazil) are explored based upon the two competing parameters of soiling-layer spectral effects and panel operating temperature. Specifically, low-bandgap PV technologies (e.g., Si or Cu(In,Ga)(SSe)2) are reported to have performances less affected by the absorption of incoming sunlight than higher-bandgap absorbers (e.g., a-Si:H or CdTe). However, the opposite is true for operating temperatures, with higher bandgaps having advantages under higher-temperature operating conditions. We present a simple comparative soiling-temperature model with experimental collaborative data to address the following question: What is the controlling parameter of the combination of soiling spectral effects and temperature on lower- and higher-bandgap module technologies? Temperature coefficients are measured for groups of modules for the four technologies having bandgaps ranging from 1.1 to 1.7 eV. Additional optical absorption for the soiling layers in the range of 300 nm to ~600 nm is confirmed by transmission measurements. The data from our soiling monitoring stations indicate that these potential spectral effects are based on consistent differences in soiling ratios and soiling rates. Some differences between the model predications and experimental observations are discussed. This paper reports temperature and soiling regions of “best-of-class” performances for these four commercial PV technologies in this climate region based upon the two competing parameters.

show abstract

Early degradation factors of solar 33 kV grid connected power plant, a comparative study

Elhassene,

El Heiba,

Taha

et al. 2024

IJPEDS

View full text Add to dashboard Cite

This paper identifies and analyses early degradation mechanisms observed in photovoltaic (PV) modules of power plants over 7 years of operation on the coast power grid in Mauritania. Performance degradation takes place due to several reasons such as material degradation following dust accumulation, high temperature, and humidity. Also, mismatch of electric power parameters such as increasing loads above projected values of the plant. Therefore, this paper analyses and studies the degradation in four phases. First, the visual inspection detects the degradation of materials and defects such as the presence of dust, cracks, browning (discoloration), and connection corrosion. The second phase proposes a mathematical model to calculate the early degradation rate (DR) of different components, such as short circuit current (Isc), open circuit voltage (VOC), the maximum yield power (Pmax), and the fill factor (FF) of the PV module. The third phase is a MATLAB modeling of the measured real-time data of the operating PV system to test Power versus voltage curves (with and without degradation) to examine the presence of failure of PV modules. Finally, compare the evolution of real-time production data for three measured years (2015, 2016, and 2017) with the simulation curves of this study.

show abstract

Evaluation of Failure Modes for Photovoltaic Modules in Arid Climatic Zones in Brazil

Cited by 3 publications

References 9 publications

Analysis of the degradation of amorphous silicon‐based modules after 11 years of exposure by means of IEC60891:2021 procedure 3

Analysis of the degradation of amorphous silicon‐based modules after 11 years of exposure by means of IEC60891:2021 procedure 3

Soiling Spectral and Module Temperature Effects: Comparisons of Competing Operating Parameters for Four Commercial PV Module Technologies

Early degradation factors of solar 33 kV grid connected power plant, a comparative study

Contact Info

Product

Resources

About