Results 51 to 60 of about 297,175 (241)

Investigation of stress-strain state in the flywheel and estimation their specific energy capacity

open access: yesMATEC Web of Conferences, 2017
In this paper, the specific energy intensity of the kinetic energy storage devices, including the flywheel-casing scheme in the potential field, is investigated.
Berezhnoi Dmitri V.   +2 more
doaj   +1 more source

Enhancement of Power System Transient Stability by Active and Reactive Power Control of Variable Speed Wind Generators

open access: yesApplied Sciences, 2020
This paper proposes a novel control method for enhancing transient stability by using renewable energy sources (RES). The kinetic energy accumulated in a rotor of variable speed wind generator (VSWG) is proactively used as the active power source, which ...
Masaki Yagami   +2 more
doaj   +1 more source

Stabilization of mechanical systems using controlled Lagrangians [PDF]

open access: yes, 1997
We propose an algorithmic approach to stabilization of Lagrangian systems. The first step involves making admissible modifications to the Lagrangian for the uncontrolled system, thereby constructing what we call the controlled Lagrangian.
Bloch, Anthony M.   +2 more
core  

Application of EOS-ELM with binary Jaya-based feature selection to real-time transient stability assessment using PMU data

open access: yes, 2017
Recent studies show that pattern-recognition-based transient stability assessment (PRTSA) is a promising approach for predicting the transient stability status of power systems.
Li, Yang, Yang, Zhen
core   +1 more source

Design of a miniature permanent-magnet generator and energy storage system [PDF]

open access: yes, 2005
The paper describes a methodology for optimizing the design and performance of a miniature permanent-magnet generator and its associated energy storage system. It combines an analytical field model, a lumped reluctance equivalent magnetic circuit, and an
Howe, D.   +3 more
core   +1 more source

Tailored Redox‐Active Catholytes Enabling High‐Rate and High‐Loading All‐Solid‐State Lithium‐Sulfur Batteries

open access: yesAdvanced Materials, EarlyView.
This study explores iodine substitution in solid electrolytes to overcome sluggish redox kinetics and poor charge transport in all‐solid‐state Li‐S batteries. The resulting iodine‐rich, amorphous phase and superionic, nanocrystalline domains enable effective redox mediation and provide a robust ionic percolation network.
Jingui Yang   +8 more
wiley   +1 more source

Kesediaan pelajar dari aspek kemahiran teknikal terhadap pembentukan kebolehkerjaan di Kolej Vokasional Wilayah Selatan [PDF]

open access: yes, 2015
Graduan yang menganggur terus menjadi masalah yang semakin meruncing di Malaysia. Terdapat majikan yang menganggap kompetensi akademik sahaja tidak mencukupi dan mula meminta institusi pendidikan tinggi untuk menghasilkan graduan yang dilengkapi ...
Hanafi., Suhaili
core  

In Situ Amine Formation to Modulate MOF‐Derived PdIn N‐Doped Carbon Catalysts

open access: yesAdvanced Materials, EarlyView.
An amine‐assisted approach converts PdIn‐MOF into PdIn intermetallic nanoparticles embedded in N‐doped carbon. In situ‐generated amines trigger early Pd nucleation, producing smaller PdIn domains than direct pyrolysis. Amine sterics and basicity tune composition and particle size, while solvent and amine co‐determine textural features.
Gonzalo Egea   +9 more
wiley   +1 more source

Variability of Energy Dissipation and Shear Rate with Geometry in Unbaffled Surface Aerator

open access: yesBulletin of Chemical Reaction Engineering & Catalysis, 2009
The dissipation rate of turbulent kinetic energy () and shear rate (γ) are the key process parameters for mixing in surface aerators. At constant dynamic variables (rotational speed), both  and γ are greatly affected by the geometric parameters ...
Bimlesh Kumar
doaj   +1 more source

Experimental Study of a Reference Model Vertical-Axis Cross-Flow Turbine. [PDF]

open access: yesPLoS ONE, 2016
The mechanical power, total rotor drag, and near-wake velocity of a 1:6 scale model (1.075 m diameter) of the US Department of Energy's Reference Model vertical-axis cross-flow turbine were measured experimentally in a towing tank, to provide a ...
Peter Bachant   +3 more
doaj   +1 more source

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