Extraction of Saturation Current and Ideality Factor from Measuring Voc and Isc of Photovoltaic Modules

Meyer, Edson L.

doi:10.1155/2017/8479487

Cited by 74 publications

(44 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the illuminated solar cell, the total current as a function of the different currents is given by [10][11]:…”

Section: Methodsmentioning

confidence: 99%

Numerical Study of the Impact of Junction Depth and the Surface Recombination Velocity on Electrical Parameters of GaAs-Solar Cell

Bey¹,

Talbi²,

Hebali³

et al. 2019

IJASE

View full text Add to dashboard Cite

Solar energy based on the solar cell is the most promising source among renewable energy sources. The photocurrent (Iph), open circuit voltage (Voc), maximum voltage (Vm), form factor (FF) and efficiency (η) of the solar cell are the most important parameters that can define the quality of this cell. In this work, we study the impact of the junction depth Xj and the surface recombination velocity Sn on these parameters in both external and internal cases of the solar cell in Arsenic gallium (GaAs) technology using the MATLAB software as a tool. Results show that in order to obtain highperformance of GaAs-solar cells must be the surface recombination velocity value is low, and the junction depth in submicron scale. Numerical results gave higher values of efficiencies 19.21 % and 30.1 % in external and internal cases respectively, and best electrical parameters of the GaAs-solar cell when the junction depth and the surface recombination velocity are equal to 0.2 μm and 10 2 cm/s respectively.

show abstract

“…In the illuminated solar cell, the total current as a function of the different currents is given by [10][11]:…”

Section: Methodsmentioning

confidence: 99%

Numerical Study of the Impact of Junction Depth and the Surface Recombination Velocity on Electrical Parameters of GaAs-Solar Cell

Bey¹,

Talbi²,

Hebali³

et al. 2019

IJASE

View full text Add to dashboard Cite

show abstract

“…This is confirmed by the breakpoints in the curves. The I-V curve characteristics in Figure 4 show that module 3 had slightly mismatched cells in its series circuit connection [38][39][40][41]. However, the slope of each curve, judging from point V = 0, indicates a slight difference in their series resistance.…”

Section: I-v Characteristicsmentioning

confidence: 99%

“…Hence, one will expect an ideality factor that is greater than 1 [65]. In some instances, the poor quality of diodes can lead to a rise in the saturated current or ideality factor that is greater than one [66]. Meanwhile, further investigation is needed to explain the quality of the a-Si:H diode (p-i-n).…”

Section: Degradation Of Short-circuit Current (I Sc )mentioning

confidence: 99%

Confirmation of the Degradation of Single Junction Amorphous Silicon Modules (a-Si:H)

Osayemwenre

Meyer

2019

International Journal of Photoenergy

Self Cite

View full text Add to dashboard Cite

This study examines the degradation of single junction amorphous silicon (a-Si:H) photovoltaic (PV) modules. It summarises the main results obtained from over 7 years of field investigation of the degradation mechanisms of a-Si:H modules. The investigation was based on performance parameters such as fill factors, parasitic resistances, and ideality factors. The initial efficiencies for these modules were in accordance with the expected values; however, a significant decrease was observed during the monitoring period.

show abstract

“…The sum of the powers of each cell according to Equations (18) and (19) produces the full power of the series connection (P MPPS ). Figure 2 shows the equivalent parallel connection circuit of six PV cells, where one is shaded.…”

Section: Series Connectionmentioning

confidence: 99%

Shading position effects on photovoltaic panel output power

Vicente

Simões

et al. 2019

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Summary The application of photovoltaic systems in urban environments is affected by partial shading, which causes decreasing converted power. The relationship between the position and the number of shaded modules versus the energy captured by a photovoltaic panel under degraded conditions has not been explored. This paper shows a novel approach that identifies and establishes the relationship and relevant conditions to the partial shading of photovoltaic module connections. The methodology consists of the analytical examination of the electrical parameters of a photovoltaic cell and connections of these cells under shaded conditions. In this work, a computational analysis of the photovoltaic cell, module, and panel under shading conditions using electric modeling for the solar cells is proposed. There are experimental results confirming the analytical and computational methodology carried out with identification of the relationship between the shading position over the photovoltaic panel and its generated power. It was verified that the magnitude of the negative effects caused by shading, that is, loss in output power, is directly and mainly related to the position of shaded modules in the shaded panel. The number of shaded modules causes, on a minority basis, a decrease on the output power.

show abstract

Extraction of Saturation Current and Ideality Factor from Measuring V_oc and I_sc of Photovoltaic Modules

Cited by 74 publications

References 17 publications

Numerical Study of the Impact of Junction Depth and the Surface Recombination Velocity on Electrical Parameters of GaAs-Solar Cell

Numerical Study of the Impact of Junction Depth and the Surface Recombination Velocity on Electrical Parameters of GaAs-Solar Cell

Confirmation of the Degradation of Single Junction Amorphous Silicon Modules (a-Si:H)

Shading position effects on photovoltaic panel output power

Contact Info

Product

Resources

About