Performance evaluation of a hybrid series–parallel system with two human operators using Gumbel–Hougaard family copula

Ismail, Abdulkareem Lado; Sanusi, Abdullahi; Yusuf, Ibrahim

doi:10.1108/ijqrm-05-2020-0137

Cited by 5 publications

(4 citation statements)

References 26 publications

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“…In this paper, we have introduced a new model of the photovoltaic system consisting of four subsystems namely, panel, inverter, battery bank and control charger. Following Ismail et al (2021), the units in each subsystem are assumed to have exponential failure and repair time.…”

Section: Literature Reviewmentioning

confidence: 99%

Reliability and performance prediction of a small serial solar photovoltaic system for rural consumption using the Gumbel-Hougaard family copula

Maihulla

Yusuf

2021

Life Cycle Reliab Saf Eng

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The current study looks into the dependability and performance of a solar photovoltaic system that is configured in series. The system's performance is measured using system strength indicators such as reliability, availability, mean time to failure, and cost measures. The system is made up of four subsystems: a 3-out-of-5 panel, a charge controller, a 2-out-of-3 battery bank, and an inverter. In contrast to some industrial and manufacturing systems, the system is assumed to operate at full capacity. In the current study, failure is classified as complete or incomplete. A complete failure occurs when any of the subsystems fails, whereas an incomplete failure occurs when a unit in the panel subsystem or battery bank fails. The system is analyzed using the linear differential-difference equation, supplementary variable technique, Gumbel-Hougaard family of copula to obtain expressions of reliability measures of determining system strength such as availability, reliability, mean time to failure (MTTF), and profit function. To illustrate the obtained results and to analyze the effect of various system parameters, numerical examples are provided. The current study is beneficial to areas with low energy consumption, such as schools and homes, in alleviating some of the challenges they face. KeywordsCopula • Solar panel • Availability • Parallel • Photovoltaic Abbreviations s Laplace transform variable for all expressions t Time variable on a time scale 1 Failure rate of the unit in subsystem 1 2 Failure rate of the unit in subsystem 2 3 Failure rate of the unit in subsystem 3 4 0 (x) Copula repair of full failure of unit in subsystem 1 0 (y) Copula repair of full failure of unit in subsystem 2 0 (z) Copula repair of full failure of unit in subsystem 3 0 (k) Copula repair of full failure of unit in subsystem 4 * Ibrahim Yusuf

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Section: Literature Reviewmentioning

confidence: 99%

Reliability and performance prediction of a small serial solar photovoltaic system for rural consumption using the Gumbel-Hougaard family copula

Maihulla

Yusuf

2021

Life Cycle Reliab Saf Eng

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“…Productivity and profitability are key factors for companies to remain competitive in today's rapidly changing world. Concomitantly, maintenance is beginning to play a more important role in many production-related industries as the impact of maintenance performance on productivity and profitability has increased (Lado and Singh, 2019;Ismail et al, 2022). Therefore, measuring the performance of maintenance activities has become a crucial part of maintenance management.…”

Section: Introductionmentioning

confidence: 99%

An adaptable end-to-end maintenance performance diagnostic framework

Sigsgaard

Andersen

et al. 2023

IJQRM

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PurposeThis paper proposes a progressive, multi-level framework for diagnosing maintenance performance: rapid performance health checks of key performance for different equipment groups and end-to-end process diagnostics to further locate potential performance issues. A question-based performance evaluation approach is introduced to support the selection and derivation of case-specific indicators based on diagnostic aspects.Design/methodology/approachThe case research method is used to develop the proposed framework. The generic parts of the framework are built on existing maintenance performance measurement theories through a literature review. In the case study, empirical maintenance data of 196 emergency shutdown valves (ESDVs) are collected over a two-year period to support the development and validation of the proposed approach.FindingsTo improve processes, companies need a separate performance measurement structure. This paper suggests a hierarchical model in four layers (objective, domain, aspect and performance measurement) to facilitate the selection and derivation of indicators, which could potentially reduce management complexity and help prioritize continuous performance improvement. Examples of new indicators are derived from a case study that includes 196 ESDVs at an offshore oil and gas production plant.Originality/valueMethodological approaches to deriving various performance indicators have rarely been addressed in the maintenance field. The proposed diagnostic framework provides a structured way to identify and locate process performance issues by creating indicators that can bridge generic evaluation aspects and maintenance data. The framework is highly adaptive as data availability functions are used as inputs to generate indicators instead of passively filtering out non-applicable existing indicators.

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“…In this work, we provide a novel solar system model that consists of four subsystems: panel, inverter, battery bank, and control charger. The units in each subsystem are considered to have exponential failure and repair times, according to Ismail et al (2021). The authors looked at a variety of systems that are related to solar photovoltaic systems.…”

Section: Introductionmentioning

confidence: 99%

Performance and Cost Assessment of a Small Solar Photovoltaic System Using Gumbel-Haugaard Family Copula Analysis

Maihulla

Yusuf²,

Bala³

2021

Preprint

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The main objective of the present study is to analyze the availability of solar photovoltaic system. The solar photovoltaic system in this paper is simple one consisting of four subsystems namely, solar panel subsystem, charge controller subsystem, batteries subsystem and inverter subsystem. Through the schematic diagram of state of the system, availability model is formulated and Chapmen - Kolmogorov differential equations are developed and solved using Gumbel Haugaard family Copula technique. The numerical values for availability, reliability, mean time to failure (MTTF), cost analysis as well as sensitivity analysis are presented. The effects of failure rates to various solar photovoltaic subsystems were developed.

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Performance evaluation of a hybrid series–parallel system with two human operators using Gumbel–Hougaard family copula

Cited by 5 publications

References 26 publications

Reliability and performance prediction of a small serial solar photovoltaic system for rural consumption using the Gumbel-Hougaard family copula

Reliability and performance prediction of a small serial solar photovoltaic system for rural consumption using the Gumbel-Hougaard family copula

An adaptable end-to-end maintenance performance diagnostic framework

Performance and Cost Assessment of a Small Solar Photovoltaic System Using Gumbel-Haugaard Family Copula Analysis

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