Electrical performance results from physical stress testing of commercial PV modules to the IEC 61215 test sequence

Skoczek, Artur; Sample, Tony; Dunlop, Ewan D.; Ossenbrink, H.

doi:10.1016/j.solmat.2008.07.008

Cited by 40 publications

(13 citation statements)

References 4 publications

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“…Delamination is a major problem because it can lead to two effects: a light decoupling where reflection increases as well as water penetration inside the module structure. Skoczek et al (2008) studied how this kind of defect and others such as bubbles and loss of mechanical energy could appear after some of the tests performed in IEC61215 norm. Oreski and Wallner (2005) tested different backsheet layers with damp heat test (85 °C and 85HR) and in some of the materials tested embrittlement was found after aging.…”

Section: Delaminationmentioning

confidence: 99%

Early degradation of silicon PV modules and guaranty conditions

et al. 2011

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The fast growth of PV installed capacity in Spain has led to an increase in the demand for analysis of installed PV modules. One of the topics that manufacturers, promoters, and owners of the plants are more interested in is the possible degradation of PV modules. This paper presents some findings of PV plant evaluations carried out during last years. This evaluation usually consists of visual inspections, I-Vcurve field measurements (the whole plant or selected areas), thermal evaluations by IR imaging and, in some cases, measurements of the I-V characteristics and thermal behaviours of selected modules in the plant, chosen by the laboratory. Electroluminescence technique is also used as a method for detecting defects in PV modules. It must be noted that new defects that arise when the module is in operation may appear in modules initially defect-free (called hidden manufacturing defects). Some of these hidden defects that only appear in normal operation are rarely detected in reliability tests (IEC61215 or IEC61646) due to the different operational conditions of the module in the standard tests and in the field (serial-parallel connection of many PV modules, power inverter influence, overvoltage on wires, etc.).

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Section: Delaminationmentioning

confidence: 99%

Early degradation of silicon PV modules and guaranty conditions

et al. 2011

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“…According to the literature, PV module performance can be degraded due to several factors such as: temperature [38], humidity [39], irradiation [40], corrosion [41], discoloration [42], and delamination [43]. The most important electrical characteristics of a PV module are the current voltage (I-V) [44] and power voltage (P-V) curves [45], short-circuit current (Isc) [46], open-circuit voltage (Voc), fill factor (FF) [47], and maximum power output (Pmax) [48].…”

Section: Description Of the Proposed Methodologymentioning

confidence: 99%

Intelligent Prognostic Framework for Degradation Assessment and Remaining Useful Life Estimation of Photovoltaic Module

Laayouj

Jamouli

Hail

2016

J. Eng. Technol. Sci.

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Abstract. All industrial systems and machines are subjected to degradation processes, which can be related to the operating conditions. This degradation can cause unwanted stops at any time and major maintenance work sometimes. The accurate prediction of the remaining useful life (RUL) is an important challenge in condition-based maintenance. Prognostic activity allows estimating the RUL before failure occurs and triggering actions to mitigate faults in time when needed. In this study, a new smart prognostic method for photovoltaic module health degradation was developed based on two approaches to achieve more accurate predictions: online diagnosis and data-driven prognosis. This framework of forecasting integrates the strengths of real-time monitoring in the first approach and relevant vector machine in the second. The results show that the proposed method is plausible due to its good prediction of RUL and can be effectively applied to many systems for monitoring and prognostics.

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“…The output power degradation for the seven modules under exceeded 30%, characterizing them as degraded. Skoczek et al (2009), when measured 204 modules in operation, found that high performance loss (> 20%) were related to the fill factor loss caused by an increase in series resistance [12] This degradation of the electrical properties can be delamination index, discoloration and corrosion shown in visual analysis. In addition, the power degradation is also related to the fill factor, that showed very low values when compared to references found in the literature even in times of high irradiance [11].…”

Section: Analysis Of the Electrical Propertiesmentioning

confidence: 99%

Deterioration and performance evaluation of photovoltaic modulesin a semi-arid climate

Afonso¹,

Carvalho²,

Antunes³

et al. 2024

RE&PQJ

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Abstract. PV modules are the most reliable component of a photovoltaic (PV) system. This supposed reliability leads the modules to have a warranty of up to 25 years. With the increasing insertion of PV in the energetic matrix, it is necessary to evaluate and guarantee the reliability of this source. This paper presents an evaluation of degradation in PV modules installed 15 years ago on the roof of the Department of Electrical Engineering, Federal University of Ceará, Brazil. This evaluation uses two methods: visual inspection and analysis to measure degradation degree in electrical properties of the modules. Maximum power (P MPP ); Current at the maximum power point (I MPP ); Voltage at the maximum power point (V MPP ); Short circuit current (I SC ) and Open circuit voltage (V OC ) are measured using a power curve tracer and compared with manufacturers data. Visual analysis show that delamination and discoloration are the degradations found in most of the modules. Considering the electrical parameters, a MPP reduction of 30% was found.

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Electrical performance results from physical stress testing of commercial PV modules to the IEC 61215 test sequence

Cited by 40 publications

References 4 publications

Early degradation of silicon PV modules and guaranty conditions

Early degradation of silicon PV modules and guaranty conditions

Intelligent Prognostic Framework for Degradation Assessment and Remaining Useful Life Estimation of Photovoltaic Module

Deterioration and performance evaluation of photovoltaic modulesin a semi-arid climate

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