Smart EV charging via advanced ongrid MPPT-PV systems with quadratic-boost split-source inverters

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Март 6, 2025

This paper presents an enhanced Maximum Power Point Tracking (MPPT) algorithm for Quadratic-Boost Split Source Inverters (QB-SSI), designed grid-connected Photovoltaic (PV)-powered smart charging stations Electric Vehicles (EVs). The proposed integrates advanced control strategies and adaptive techniques to address the limitations of traditional MPPT techniques. By dynamically adjusting operating conditions environmental factors, achieves accurate rapid tracking maximum power point (MPP) under dynamic conditions. provides a comprehensive overview QB-SSI topology, detailed mathematical model, simulation results. These findings demonstrate superior performance algorithm, offering significant improvements in accuracy, convergence time, efficiency, thereby enhancing overall QB-SSI-based PV systems. A modified space vector modulation (SVPWM) is utilized enhance inverter switching characteristics dc-boosting capability. system modeled via MATLAB/Simulink™, experimental results providing valuable insights into functionality algorithm. allows analysis its capabilities potential advantages practical applications.

Язык: Английский

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Dynamic modeling of hydrogen production from boil-off gas (BOG) at onshore LNG facilities: Technical and socio-economic analysis

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 67, С. 949 - 958

Опубликована: Фев. 28, 2024

Integrating hydrogen (H2) production systems within natural gas (NG) supply chains can support smoothening transition to cleaner energy resources by utilizing existing infrastructures. This work investigates the dynamic conversion of boil-off (BOG) using steam methane reforming (SMR) produce H2 liquified (LNG) process. The study extends beyond technical considerations encompass a socio-economic approach, exploring optimal allocation different monetization techniques (e.g., ammonia and methanol) subject final market price demand data. Dynamic simulation showed an excellent ability address variations in BOG flow, change LNG temperature pressure drop chain, highlighting need for adaptive flowrate process setpoints. productivity yield are dependent on flow rates, carbon ration (S/C) input system. Optimizing reformer is best practice enhanced H2. Allocating approximately 74% produced CO2-free production, remainder methanol via CO2 hydrogenation, achieves annual profitability $1.36 billion. However, when considering variable data over ten years, model proposes flexible both routes, resulting average yearly $6.84 These findings underscore importance integrating interactive approaches exogenous endogenous uncertainties, providing robust strategy against risks. comprehensive approach presented this contributes understanding strategic planning chains, emphasizing adaptability economic viability landscape transition.

Язык: Английский

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Current and Future Role of Natural Gas Supply Chains in the Transition to a Low-Carbon Hydrogen Economy: A Comprehensive Review on Integrated Natural Gas Supply Chain Optimisation Models

Energies, Год журнала: 2023, Номер 16(22), С. 7672 - 7672

Опубликована: Ноя. 20, 2023

Natural gas is the most growing fossil fuel due to its environmental advantages. For economical transportation of natural distant markets, physical (i.e., liquefaction and compression) or chemical direct indirect) monetisation options must be considered reduce volume meet demand different markets. Planning supply chains a complex problem in today’s turbulent especially considering uncertainties associated with final market competition emerging renewable hydrogen energies. This review study evaluates latest research on mathematical programming MILP MINLP) as decision-making tool for designing planning under horizons. The first part this assesses status existing infrastructures by addressing readily available options, quantitative tools selecting single-state multistate chain optimisation models. second investigates potential energy carrier integration chains, carbon capture utilisation, storage technologies. foreseen decarbonise systems, diversify product portfolio, fill gap between current future need cleaner commodities. Since markets are has replace fuels future, stochastic conditions uncertainty vital hedge against risks through responsive project’s early design stages. Hence, studies works hydrogen–natural were reviewed deterministic conditions. Only models optimisation, including linear nonlinear models, evaluate effectiveness each proposed approach.

Язык: Английский

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Effect of calcination temperature on Co/sepiolite catalyst for hydrogen production by ethanol steam reforming: Co speciation from phyllosilicate to spinel

Process Safety and Environmental Protection, Год журнала: 2024, Номер 203, С. 595 - 607

Опубликована: Янв. 24, 2024

Язык: Английский

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Production of hydrogen from polyoxymethylene in a binary fluidized bed

Applied Energy, Год журнала: 2024, Номер 360, С. 122833 - 122833

Опубликована: Фев. 13, 2024

Язык: Английский

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Energy markets restructure beyond 2022 and its implications on Qatar LNG sales strategy: Business forecasting and trend analysis

Heliyon, Год журнала: 2024, Номер 10(7), С. e27682 - e27682

Опубликована: Март 17, 2024

The emergence of new suppliers and energy resources has reshaped the market in terms contractual structures pricing systems. shifts were accelerated response to latest Russian-Ukraine crisis, impacting natural gas supply chains from financing projects contracting volumes. increased demand for liquified volumes intensified need switch long-term oil-indexed contracts short-term gas-indexed contracts. Those anticipated influence selling strategies expected added 49 MTPA Qatari LNG, wherein increasing share spot would be reflected higher economic performance. This study used forecasted prices investigate potential LNG strategies. Initially, projections most dominant systems (i.e., brent, Henry Hub, Title Transfer Facility, Japan Korea Marker) estimated between 2023 2040. While Qatar been relying on contracts, second step annual revenues under different combinations sales). Finally, varying brent slopes was measured. Due data limitations non-stationarity, double exponential smoothing model selected among tested models. Considering current dynamics, forecasts showed an upward price trend until An average increase 1.24% studied reported. Reducing brent-indexed 70% dedicating remaining 30% sales yielded highest premiums revenue estimates. $62 bn reported 70/30 strategy, around 6% than 100% strategy. findings revealed that diversifying approach introducing can enhance revenues. From buyers' perspective, outcomes support policymakers understanding implications escalated driven by a lack liquidity investments.

Язык: Английский

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Data-Driven Decision-Making for flexible natural gas allocation under Uncertainties: An agent-based modelling approach

Energy Conversion and Management X, Год журнала: 2024, Номер 24, С. 100734 - 100734

Опубликована: Окт. 1, 2024

Язык: Английский

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Multi-period optimisation of flexible natural gas production network infrastructure with an operational perspective: A mixed integer linear programming approach

Energy Conversion and Management X, Год журнала: 2024, Номер unknown, С. 100818 - 100818

Опубликована: Ноя. 1, 2024

Язык: Английский

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Inherent safety design mechanism for the hydrogen production process through natural gas reforming

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 99, С. 553 - 565

Опубликована: Дек. 18, 2024

Язык: Английский

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