Journal ArticleDOI
Reliability of Candidate Photovoltaic Module-Integrated-Inverter (PV-MII) Topologies—A Usage Model Approach
Souhib Harb,Robert S. Balog +1 more
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In this article, the authors proposed a new methodology for calculating the mean time between failure (MTBF) of a photovoltaic module-integrated inverter (PV-MII).Abstract:
This paper proposes a new methodology for calculating the mean time between failure (MTBF) of a photovoltaic module-integrated inverter (PV-MII). Based on a stress-factor reliability methodology, the proposed technique applies a usage model for the inverter to determine the statistical distribution of thermal and electrical stresses for the electrical components. The salient feature of the proposed methodology is taking into account the operating environment volatility of the module-integrated electronics to calculate the MTBF of the MII. This leads to more realistic assessment of reliability than if a single worst case or typical operating point was used. Measured data (module temperature and insolation level) are used to experimentally verify the efficacy of the methodology. The proposed methodology is used to examine the reliability of six different candidate inverter topologies for a PV-MII. This study shows the impact of each component on the inverter reliability, in particular, the power decoupling capacitors. The results confirm that the electrolytic capacitor is the most vulnerable component with the lowest MTBF, but more importantly provide a quantified assessment of realistic MTBF under expected operating conditions rather than a single worst case operating point, which may have a low probability of occurrence.read more
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Journal ArticleDOI
Transitioning to Physics-of-Failure as a Reliability Driver in Power Electronics
Huai Wang,Marco Liserre,Frede Blaabjerg,Peter de Place Rimmen,John B. Jacobsen,Thorkild Kvisgaard,Jorn Landkildehus +6 more
TL;DR: In this article, the three major aspects of power electronics reliability are discussed, respectively, which cover physics-of-failure analysis of critical power electronic components, state-ofthe-art design for reliability process and robustness validation, and intelligent control and condition monitoring to achieve improved reliability under operation.
Journal ArticleDOI
Graph-Based Semi-supervised Learning for Fault Detection and Classification in Solar Photovoltaic Arrays
TL;DR: A fault detection and classification method using graph-based semi-supervised learning (SSL) that only uses a few labeled data points, but relies instead on a large amount of inexpensive unlabeled data points that demonstrates self-learning ability in real-time operation.
Journal ArticleDOI
Decoupled Active and Reactive Power Control for Large-Scale Grid-Connected Photovoltaic Systems Using Cascaded Modular Multilevel Converters
TL;DR: In this paper, a decoupled active and reactive power control strategy was proposed to enhance system operation performance in large-scale grid-connected photovoltaic (PV) systems.
Journal ArticleDOI
Reactive Power Compensation and Optimization Strategy for Grid-Interactive Cascaded Photovoltaic Systems
TL;DR: In this paper, an optimized reactive power compensation algorithm (RPCA) is proposed to improve the system operation stability and reliability, and facilitate MPPT implementation for each converter module simultaneously.
Journal ArticleDOI
Microgrid architectures for low voltage distributed generation
TL;DR: A review of the main microgrid architectures proposed in the literature has been carried out as mentioned in this paper, where the authors classified the micro-grid architectures based on their AC or DC distribution buses.
References
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Journal ArticleDOI
Power-Electronic Systems for the Grid Integration of Renewable Energy Sources: A Survey
Juan Manuel Campos Carrasco,Leopoldo G. Franquelo,Jan T. Bialasiewicz,Eduardo de Teresa Galván,R.C.P. Guisado,Ma.A.M. Prats,Jose I. Leon,Narciso Moreno-Alfonso +7 more
TL;DR: New trends in power electronics for the integration of wind and photovoltaic (PV) power generators are presented and a review of the appropriate storage-system technology used for the Integration of intermittent renewable energy sources is introduced.
Journal ArticleDOI
A review of single-phase grid-connected inverters for photovoltaic modules
TL;DR: In this article, the authors focus on inverter technologies for connecting photovoltaic (PV) modules to a single-phase grid and categorize the inverters into four classifications: 1) the number of power processing stages in cascade; 2) the type of power decoupling between the PV module(s) and the single phase grid; 3) whether they utilizes a transformer (either line or high frequency) or not; and 4) the kind of grid-connected power stage.
Journal ArticleDOI
A Review of the Single Phase Photovoltaic Module Integrated Converter Topologies With Three Different DC Link Configurations
Quan Li,Peter Wolfs +1 more
TL;DR: In this paper, a topology study of the PV MICs in the power range below 500 W and covers most topologies recently proposed for MIC applications is presented, where the MIC topologies are classified into three different arrangements based on the dc link configurations.
Journal ArticleDOI
Development of a photovoltaic array model for use in power-electronics simulation studies
J.A. Gow,C.D. Manning +1 more
TL;DR: In this article, the authors present a circuit-based simulation model for a PV cell in order to allow the interaction between a proposed power converter (with its associated control arrangement) and the PV array to be studied.
Journal ArticleDOI
Operating temperature of photovoltaic modules: A survey of pertinent correlations
E. Skoplaki,J.A. Palyvos +1 more
TL;DR: In this paper, the importance of solar cell/module operating temperature for the electrical performance of silicon-based photovoltaic installations is briefly discussed, and the explicit and implicit correlations found in the literature which link this temperature with standard weather variables and material/systemdependent properties, in an effort to facilitate the modeling/design process in this very promising area of renewable energy applications.
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