2026 September-2 - 252 articles
This study presents a climatological assessment of wave-energy resources and spectral organization along the Brazilian continental margin using the Copernicus Marine WAVERYS global wave reanalysis. Monthly wave-energy density, total-wave power flux,...
Asphaltene deposition is a key issue constraining the field application of CO2 flooding, yet the deposition characteristics and formation damage mechanisms under different CO2 dissolution concentrations remain unclear. In this study, the asphaltene d...
Educational institutions in developing countries face increasing electricity demand, frequent power outages, and rising operational costs due to their heavy reliance on utility grids and diesel generators. This study evaluates a grid-connected hybrid...
Supersonic ejectors offer a promising solution for extending low-pressure well life and increasing total power output in geothermal plants by entraining low-pressure fluid using a high-pressure primary flow. While steam supersonic ejectors are widely...
With the large-scale integration of electric vehicles (EVs), distributed charging scheduling has become a key enabler for coordinated charging management. However, its reliance on information exchange makes it susceptible to cyberattacks, including F...
Interwell interference has become a routine engineering concern in closely spaced, vertically stacked shale gas development, yet pressure responses observed in offset wells do not necessarily represent direct hydraulic or fluid communication. This st...
The low thermal conductivity of phase change materials (PCMs) limits the charging and discharging rates of shell-and-tube latent heat thermal energy storage (LHTES) systems. This review examines metal-foam enhancement from a spatial and system-level...
Extending flight endurance is critical for unmanned aerial vehicles (UAVs) deployed in post-disaster surveillance missions. This study proposes a hybrid battery–laser power system in which a ground-based laser source continuously tracks and cha...
The transition towards low-carbon energy systems is fundamentally reshaping the relationships between energy security, affordability, and environmental sustainability. Although the energy trilemma has become a widely adopted framework for analysing t...
The growing demand for sustainable high-power electric drive systems requires advanced control strategies capable of ensuring high efficiency, operational reliability, and continuous service under fault conditions. Parallel multilevel inverter-fed du...
(1) Background: The cement industry is a major contributor to global greenhouse gas emissions, requiring reliable monitoring methodologies. This study addresses the indirect estimation of combustion-related CO2 associated with fuel consumption i...
With offshore oil and gas exploration advancing into ultra-deep waters, subsea reservoirs face extreme high-temperature and high-pressure (HTHP) conditions, leading to significant alterations in crude oil properties. These changes destabilize oil&nda...
High direct normal irradiation and a large residual stream from oil-palm processing make the Colombian Caribbean an attractive site for firm renewable power, yet the balance between thermal energy storage (TES) and biomass backup for supercritical CO...
The controllable line-commutated converter (CLCC), which achieves forced commutation and effectively prevents commutation failures, has seen initial engineering applications in high-voltage direct current (HVDC) transmission systems. This paper analy...
With the accelerating transition toward low-carbon power systems, dynamic carbon emission factor (DCEF) forecasting has become increasingly important for carbon accounting and real-time carbon management. However, the complex nonlinearity, strong tem...
With the rapid electrification of transportation, electric vehicles (EVs) have become an increasingly important component of sustainable mobility, making the efficient operation and management of charging infrastructure increasingly critical. Accurat...
Carbon dioxide-enhanced oil recovery (CO2-EOR) in ultra-low-permeability reservoirs requires a reliable understanding of CO2–oil phase behavior and minimum miscibility pressure (MMP), particularly where multiple stratigraphic members are co-dev...
When inverter switching frequency is constrained, PMSM drives operating at relatively high fundamental electrical frequencies may exhibit a low switching-to-fundamental-frequency ratio (low carrier ratio), resulting in fewer voltage vector updates pe...
Grid-forming battery energy storage systems may remain synchronized yet fail to deliver active- and reactive-power service after severe disturbances. This paper develops a service-constrained critical energy-headroom framework for current-limited gri...
The power sector is a priority area for carbon mitigation at the provincial level. Existing studies on provincial power-sector carbon budgets mainly focus on abatement potential and the allocation of aggregate emission budgets, while giving insuffici...
Biogas-to-hydrogen production provides a renewable pathway to decarbonize hydrogen supply, yet consensus remains lacking regarding the most energetically and economically favorable process configuration. This study develops steady-state Aspen Plus mo...
The transition of the USB Power Delivery (USB-PD) standard from fixed 5–20 V profiles to the dynamic extended power range (EPR) of up to 48 V and 240 W has redefined the constraints of isolated AC–DC conversion for high-density adapters a...
With the increasing penetration of renewable energy and the growing use of power electronic interfaces, the operating characteristics of modern power systems are changing significantly [...]
Recovering the low-temperature heat released during compressed air energy storage (CAES) charging for industrial steam generation requires a heat pump that can provide both the required steam temperature and sufficient heating capacity. This study ap...
This study investigates proppant flowback using field data, numerical simulations, and machine learning for deep coalbed methane (CBM) wells in the Linxing–Shenfu Block, Ordos Basin. Field data show that most proppant production occurs during t...
Economical operation of cascade pumping stations requires temporal feedback and spatial coordination, whereas a single day-ahead schedule cannot correct deviations arising during execution. This study develops a distributed multi-time-scale superviso...
Hydrogen-enriched natural gas can reduce direct carbon emissions from industrial heat-treatment furnaces, but its effect should be evaluated at the required process temperature rather than only at constant burner input. This study investigates 0&ndas...
The methodological innovation of this study is a phase-domain separation-and-recombination framework that maps harmonic voltage to prospective flux, maps controlled quasi-DC winding current to magnetic operating-point displacement, and then resolves...
To improve the low-temperature heating performance of electric-vehicle CO2 heat pumps, their system configurations and control strategies have become increasingly complex. This has made coordinated regulation among multiple components more difficult...
Earth-to-air heat exchangers (EAHEs) use ground thermal inertia to precondition ventilation air, but their representation in whole-building simulation is limited by the simplified geometry and internally defined heat-transfer formulation of the nativ...
To address the energy supply–demand imbalance caused by the limited operating modes of stand-alone combined cooling, heating, and power (CCHP) microgrids, this study investigates a geographically integrated energy framework of two interconnecte...
To address the severe physical wear of actual circuit breakers, limited logic verification under complex operating conditions, and maintenance scheduling conflicts during operational testing in power systems, this paper presents a portable auxiliary...
Extreme events threaten distribution network security. When remote-controlled switches (RCSs) lose remote operability during extreme events while remaining manually operable, faulted areas may no longer be isolated through remote switching alone. Thi...
In cold-region industrial parks, prolonged heating seasons and intensive hot water demands trigger severe temporal mismatches between stochastic renewable generation and rigid thermal requirements. To address this, a multidimensional synergistic opti...
Accurate solar irradiance forecasting is a key prerequisite for reliable solar photovoltaic (PV) operation, effective energy management, and system optimization. Conventional forecasting methods, such as historical averaging, persistence models, and...
Unlike single-converter grid-connected systems and multi-converter grid-forming (GFM) systems operating in islanded mode, grid-connected multi-converter systems comprising parallel grid-following (GFL) and GFM converters exhibit more complex internal...
Optimising grid-connected photovoltaic (PV)-battery renewable energy systems involves balancing economic performance, renewable energy use, and grid reliance. While HOMER Grid offers dependable optimisation, running multiple simulations for benchmark...
The increasing replacement of synchronous generators (SGs) by grid-following (GFL) and grid-forming (GFM) inverters is reshaping the dynamic bus characteristics of modern power systems. This transition makes a fixed ideal-voltage-source representatio...
Power mini-grids are being transformed from locally automated electrical systems into cyber-physical ecosystems in which heterogeneous distributed energy resources, storage, converters, flexible demand and uncertain external conditions must be coordi...
The major challenge in photovoltaic (PV) maximum power point tracking (MPPT) systems is finding a balance between the high performance of artificial intelligence techniques and the interpretability and reliability of physics-based approaches. This pa...
When a virtual power plant (VPP) participates in energy and reserve markets, day-ahead bids, reserve commitments, and real-time delivery share the same internal resource constraints, while aggregate models cannot readily trace internal responsibility...
Accurate detection of early minor faults in electric vehicle traction batteries is important for preventing thermal runaway under complex operating conditions. Aging-related capacity degradation and measurement noise can mask the weak voltage distort...
In cascaded H-bridge (CHB) high-voltage drives using unipolar frequency-doubling carrier phase-shifted sinusoidal pulse width modulation (CPS-SPWM), unequal carrier phase offsets weaken switching-harmonic cancelation. This paper proposes a carrier-sy...
To improve post-fault service restoration and network reconfiguration in distribution networks with distributed generation, this paper proposes a fault recovery and reconfiguration method based on a membrane computing multi-objective optimization alg...
This paper develops distributed Backstepping Integral Terminal Sliding Mode (BITSM) control for consensus speed tracking of networked Permanent Magnet Synchronous Motor (PMSM) drives under bounded matched uncertainty. A leader–follower speed lo...
Underground hydrogen storage (UHS) is poised to emerge as a pivotal technology for large-scale and seasonal energy storage in future low-carbon energy systems. Nevertheless, ensuring its safe deployment necessitates implementation of monitoring strat...
Cellular substrates placed beneath the piezoceramic are increasingly used to raise the output of vibration energy harvesters, yet the enhancement is commonly attributed to auxeticity, and the durability penalty of perforation is seldom quantified. Th...
In the present study, using advanced methodologies together with analytical and experimental equipment, the ignition and combustion characteristics were determined for coal-based fuels, sorbent derived from this coal, and oil-impregnated sorbent (33....
This study examines whether a structure-preserving representation of the joint Open-High-Low-Close (OHLC) vector provides coherent forecasts for China’s INE crude-oil futures and how seven benchmark models compare within that representation. Th...
Low-switching-frequency operation is essential for high-power modular multilevel converters (MMCs), but it makes the simultaneous achievement of low harmonics, fast transient response, and reliable internal control more difficult. Conventional lookup...
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