Failure rate ≈ Failure rate
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Application of Bayesian Networks in Reliability Evaluation Open
The Bayesian network (BN) is a powerful model for probabilistic knowledge representation and inference and is increasingly used in the field of reliability evaluation. This paper presents a bibliographic review of BNs that have been propos…
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Wind turbine reliability data review and impacts on levelised cost of energy Open
Reliability is critical to the design, operation, maintenance, and performance assessment and improvement of wind turbines (WTs). This paper systematically reviews publicly available reliability data for both onshore and offshore WTs and i…
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Assessment of failure rates and reliability of floating offshore wind turbines Open
A model is proposed to assess the failure rates of components of floating offshore wind turbines based on the knowledge of failure data of corresponding structures of onshore wind turbines with sufficient failure data. A failure rate corre…
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Measuring reliability under epistemic uncertainty: Review on non-probabilistic reliability metrics Open
In this paper, a systematic review of non-probabilistic reliability metrics is conducted to assist the selection of appropriate reliability metrics to model the influence of epistemic uncertainty. Five frequently used non-probabilistic rel…
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Reliability of Power Converters in Wind Turbines: Exploratory Analysis of Failure and Operating Data From a Worldwide Turbine Fleet Open
In view of the frequent and costly failures of power converters in wind turbines, a large consortium of research institutes and companies has joined forces to investigate the underlying causes and key driving factors of the failures. This …
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Uncertainty-Aware Dynamic Reliability Analysis Framework for Complex Systems Open
Critical technological systems exhibit complex dynamic characteristics such as time-dependent behaviour, functional dependencies among events, sequencing and priority of causes that may alter the effects of failure. Dynamic fault trees (DF…
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Using a Hybrid Cost-FMEA Analysis for Wind Turbine Reliability Analysis Open
Failure mode and effects analysis (FMEA) has been proven to be an effective methodology to improve system design reliability. However, the standard approach reveals some weaknesses when applied to wind turbine systems. The conventional cri…
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Analysis of long-term performance and reliability of PV modules under tropical climatic conditions in sub-Saharan Open
Reliability assessment of Photovoltaic (PV) modules is very crucial to increase the service lifetime of PV systems. This study assesses the degradation rate and reliability of PV modules operated for twelve years under the tropical climati…
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Reliability Modeling and Evaluation of MMCs Under Different Redundancy Schemes Open
Due to the demand for high reliability, modular multilevel converters (MMCs) are designed with redundant sub-modules. Redundant sub-modules can be integrated into the converter by employing different redundancy schemes: the conventional ac…
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Stochastic Diffusion Modeling of Degradation Data Open
Accelerated degradation tests (ADTs) can provide timely relia bility information of product. Hence ADTs have been widely used to assess the lifetime distribution of highly reliable products. In order to properly predict the lifetime distri…
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An Overview of Lifetime Management of Power Electronic Converters Open
An expected lifetime of converters is of great importance for optimal decision-making in the planning of modern Power Electronic (PE) systems. Hence, the lifetime management of power electronic systems has attracted a lot of attention in a…
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The analysis and interpretation of critical temperatures Open
Critical temperatures are widely used to quantify the upper and lower thermal limits of organisms. But measured critical temperatures often vary with methodological details, leading to spirited discussions about the potential consequences …
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Joint condition-based maintenance and condition-based production optimization Open
Developments in sensor equipment and the Internet of Things increasingly allow production facilities to be monitored and controlled remotely and in real-time. Organizations can exploit these opportunities to reduce costs and improve reliab…
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Condition-Based Production Planning: Adjusting Production Rates to Balance Output and Failure Risk Open
Problem Definition: Many production systems deteriorate over time as a result of load and stress caused by production. The deterioration rate of these systems typically depends on the production rate, implying that the equipment’s deterior…
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Life Cycle Reliability and Maintenance Analyses of Wind Turbines Open
Wind power generation is an effective form of clean, renewable energy which operate both on land and offshore. The primary means of converting wind to power is by wind turbines. The issue with wind turbines is the life cycle reliability, o…
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Data-Driven Battery Lifetime Prediction and Confidence Estimation for Heavy-Duty Trucks Open
Maintenance planning is important in the automotive industry as it allows fleet owners or regular customers to avoid unexpected failures of the components. One cause of unplanned stops of heavy-duty trucks is failure in the lead-acid start…
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Failure Rate Assessment for Onshore and Floating Offshore Wind Turbines Open
A detailed analysis is performed on a dataset of failure and maintenance records from various onshore wind farms located in different geographical areas for the safety, risk, reliability, availability, and maintainability characterization …
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Reliability Modeling of PV Systems Based on Time-Varying Failure Rates Open
The penetration of photovoltaic (PV) systems in power grids has substantially increased since the recognition of renewable energies. In a high solar-integrated network environment, an accurate forecast of the expected solar energy output i…
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Model Uncertainty in Accelerated Degradation Testing Analysis Open
In accelerated degradation testing (ADT), test data from higher than normal stress conditions are used to find stochastic models of degradation, e.g., Wiener process, Gamma process, and inverse Gaussian process models. In general, the sele…
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RAM analysis and availability optimization of thermal power plant water circulation system using PSO Open
This paper presents reliability, availability, and maintainability (RAM) analysis framework for evaluating
\nthe performance of a circulation system of water (WCS) used in a coal-fired power plant (CFPP).
\nThe performance of WCS is evalua…
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Experimental and analytical study of Xeon Phi reliability Open
We present an in-depth analysis of transient faults effects on HPC applications in Intel Xeon Phi processors based on radiation experiments and high-level fault injection. Besides measuring the realistic error rates of Xeon Phi, we quantif…
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A Comparative Reliability Study of Three Fundamental Multilevel Inverters Using Two Different Approaches Open
The reliability of power electronic devices and components is very important to manufacturers. In recent years, many researchers have conducted reliability assessments of power electronic devices, yet the reliability of numerous circuits u…
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The Inverse Nakagami-m Distribution: A Novel Approach in Reliability Open
In the paper, the inverse Nakagami-m (NK) distribution is proposed. This distribution is the reciprocal of the NK model that plays an important role in the general area of the communications engineering and reliability system. The proposed…
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Optimal preventive maintenance for wind turbines considering the effects of wind speed Open
This paper presents a preventive maintenance policy for wind turbines considering three effects of wind speed: accelerating hazard rate, restricting maintenance implementation, and affecting downtime cost. The effect on the hazard rate is …
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Failure probability estimation of overhead transmission lines considering the spatial and temporal variation in severe weather Open
Estimation for weather-related failure probability of overhead transmission lines is essential in the reliability assessment of a power system. This paper analyzes the outage and weather data of 110 kV overhead transmission lines in the Gu…
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Reliability Evaluation and Improvement ofIslanded Microgrid Considering OperationFailures of Power Electronic Equipment Open
With the high integration of power electronic technologies in microgrids, the reliability assessment considering power electronic devices has become a hot topic. However, so far no research has considered the impact of the operation failur…
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Improving the reliability and availability of railway track switching by analysing historical failure data and introducing functionally redundant subsystems Open
Track switches are safety critical assets that not only provide flexibility to rail networks but also present single points of failure. Switch failures within dense-traffic passenger rail systems cause a disproportionate level of delay. Su…
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Improving CubeSat reliability: Subsystem redundancy or improved testing? Open
The objective of this paper is to investigate which approach would lead to more reliable CubeSats: full subsystem redundancy or improved testing. Based on data from surveys, the reliability of satellites and subsystems is estimated using a…
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Reliability and Performance Analysis of a Series-Parallel System Using Gumbel–Hougaard Family Copula Open
This research looks into the reliability metrics that are used to assess the strength of a solar system’s serial system, which is made up of four subsystems. Each subsystem consists of two parallel active components: two out of two photo-v…
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Reliability indicators of stabilizing devices in the agriculture electrical supply system Open
The article discusses the issues of reliability indicators of a voltage stabilizer built based on non-contact switching of a boost transformer and an autotransformer used for domestic consumers. The probability of uptime, which depends on …