Investigation of Leakage Currents Depending on the Mounting Situation in Accordance to Amorphous Silicon Modules

Voswinckel, Sebastian; Mänz, P.; Schmidt, Christian; Wesselak, Viktor

doi:10.1016/j.egypro.2014.10.008

Cited by 8 publications

(7 citation statements)

References 2 publications

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“…Apart from the efficiency and stability, the commercialization of OSCs is greatly impeded due to poor reproducibility of cells 22,39,40 . Generally, the inferior reproducibility of OSCs is attributed to the highly variable material properties of absorber layer which could be countered to some extent through fine tuning of the thin film morphology.…”

Section: Resultsmentioning

confidence: 99%

“…Apart from the efficiency and stability, the commercialization of OSCs is greatly impeded due to poor reproducibility of cells. 22,39,40 Generally, the inferior reproducibility of OSCs is attributed to the highly variable material properties of absorber layer which could be countered to some extent through fine tuning of the thin film morphology. Among several involved absorber layer variables, the variable nature of carrier mobility is expected to play a key role towards reproducibility deterioration in OSCs.…”

Section: Reproducibility Analysis Of Simulated Cellsmentioning

confidence: 99%

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Enhanced efficiency, durability and reproducibility of non‐fullerene acceptor organic solar cell with NiO as hole transport material: A computational study

Bhargava

2022

Intl J of Energy Research

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The non-fullerene acceptor (NFA) based organic solar cells (OSCs) are gaining popularity owing to their lucrative properties like better stability, easy fabrication and broad absorption range which their fullerene-based counterparts fail to offer. This report presents a simulation-based comparison of NFA OSCs modelled by incorporating two different hole transport layers (HTLs) namely poly(3,4-ethylenedioxythiophene)polystyrene sulfonate (PEDOT:PSS) and nickel oxide (NiO) using SCAPS-1D. The performance analysis of cells are performed on the basis of variations in current density-voltage (J-V), quantum efficiency-wavelength, recombination rate-depth (RR-x), Nyquist plots and performance metrics: (a) open-circuit voltage (V oc ); (b) short-circuit current density (J sc ); (c) fill-factor (FF); and (d) power conversion efficiency (η). Furthermore, the effect of HTL/absorber interfacial defect density towards the performance variation in cells is also compared. Furthermore, the durability assessment of cells is carried out in terms of performance degradation occurring due to gradual progression of potential-induced degradation effect inside the cells. Moreover, the reproducibility analysis is performed with respect to variations occurring in the carrier mobility of absorber layer. The results reveal better efficiency, durability and reproducibility of cell with NiO as HTL. The report highlights the importance of HTL properties towards improving the commercialization prospects of NFA OSCs.

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Section: Resultsmentioning

confidence: 99%

Section: Reproducibility Analysis Of Simulated Cellsmentioning

confidence: 99%

Enhanced efficiency, durability and reproducibility of non‐fullerene acceptor organic solar cell with NiO as hole transport material: A computational study

Bhargava

2022

Intl J of Energy Research

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“…The magnitude of leakage current still depended on the humidity. Voswinckel S. et al [ 15 ] have studied the dependence of leakage current on the mounting techniques used for thin film a-Si modules. The goal of this study was to analyse leakage currents based on the difference of the mounting and grounding techniques of a-Si modules under outdoor operating conditions.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The magnitude of leakage current still depended on the humidity. Voswinckel S. et al [15] have studied the dependence of leakage current on…”

Section: Studies On Leakage Currents Of Pv Modulesmentioning

confidence: 99%

Impacts on insulation resistance of thin film modules: A case study of a flooding of a photovoltaic power plant in Thailand

2022

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Effects of high humid weather conditions on photovoltaic (PV) modules were examined in this study, particularly insulation resistance. Three types of tests were conducted which include leakage voltage test, leakage current test, and wet leakage current test. Due to the usual field constraints in the study of insulation resistance, which limited measurements of leakage current, assurance was made that representative sampling were conducted. The study found a high number of modules with low insulation resistance and high leakage voltage values, which can interrupt the PV plant operation. High leakage voltage creates safety hazards issues. About two third of the samples, which showed deep moisture ingress in the modules, could not pass the minimum criterion of IEC 61646 standard for wet insulation resistance testing. The leakage current results showed the same trend as of leakage voltage, proving that leakage voltage test, which is quite easy and economical, can be used to detect such type of problems in field tests. Prolonged humidity conditions of the PV power plant particularly from natural disaster, should be avoided. Efficient drainage system should be supported in and around installations and all other moisture sources should be regularly removed from the plant area to keep proper operation and minimize losses in energy production.

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“…In transformerless PV installations, their components influence the leakage current’s flow [ 5 , 6 ], and for functional purposes, in some cases, these currents are required to be strongly reduced [ 7 , 8 ] with the use of advanced types of inverters [ 9 ] or even a unique pulse width modulation method [ 10 ]. Values of the leakage current may also depend on the type and mounting conditions of PV modules [ 11 ]. In turn, faults in PV systems [ 12 , 13 ], especially earth faults [ 14 ] may introduce a threat to the safety of people and equipment.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Residual Current Devices at Earth Fault Currents with DC Component

Czapp

Tariq

Cieślik

2022

Sensors

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Low-voltage electrical installations are increasingly saturated with power electronic converters. Due to very high popularity of photovoltaic (PV) installations and the spread of electric vehicles (EV) as well as their charging installations, DC–AC and AC–DC converters are often found in power systems. The transformerless coupling of AC and DC systems via power electronic converters means that an electrical installation containing both these systems should be recognized from the point of view of earth fault current waveform shapes. In such installations, various shapes of the earth fault current may occur—a DC component of a high value may especially flow. The DC component included in the earth fault current influences the tripping threshold of residual current devices (RCDs)—the devices which are mandatory in certain locations. This paper presents results of the AC-type, A-type, and F-type RCDs sensitivity testing under residual currents of various compositions of the DC component. This testing has shown that the DC component may both degrade and improve the sensitivity of RCDs. Moreover, unexpected positive behaviors of RCDs in some circumstances under DC residual current is discussed. Therefore, recognizing the real sensitivity and behavior of RCDs from the point of view of the DC component is important for effective protection against electric shock, in particular, in PV installations and EV charging systems. The research results provide a new insight into the real behavior of RCDs in modern power systems and, consequently, the safety of people.

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Investigation of Leakage Currents Depending on the Mounting Situation in Accordance to Amorphous Silicon Modules

Cited by 8 publications

References 2 publications

Enhanced efficiency, durability and reproducibility of non‐fullerene acceptor organic solar cell with NiO as hole transport material: A computational study

Enhanced efficiency, durability and reproducibility of non‐fullerene acceptor organic solar cell with NiO as hole transport material: A computational study

Impacts on insulation resistance of thin film modules: A case study of a flooding of a photovoltaic power plant in Thailand

Behavior of Residual Current Devices at Earth Fault Currents with DC Component

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