Results 81 to 90 of about 18,994,398 (235)

Flywheel Energy Storage for Ancillary Services: A Novel Design and Simulation of a Continuous Frequency Response Service for Energy Limited Assets

open access: yesIEEE Open Access Journal of Power and Energy
With National Grid ESO introducing a suite of new Frequency Response Services for the GB electricity market, there is an opportunity to investigate the ability of low-energy capacity storage systems to participate in the frequency response market.
Andrew J. Hutchinson, Daniel T. Gladwin
doaj   +1 more source

Frequency response sensitivity to crack for piezoelectric FGM beam subjected to moving load

open access: yesVietnam Journal of Mechanics
Since functionally graded material (FGM) is increasingly used in high-tech engineering, free and forced vibrations of FGM structures become an important issue.
Nguyen Ngoc Huyen, Duong Thanh Huan
doaj   +1 more source

Evaluation of acoustic properties of lattice structure manufactured by selective laser melting

open access: yesNihon Kikai Gakkai ronbunshu, 2020
In this paper, sound absorption properties of poroelastic lattice structure are investigated through numerical simulation and measurement. The lattice structures discussed in this paper are composed of slender beams only (BCC) and beams and shells (BCC-S)
Naoki MASUDA   +3 more
doaj   +1 more source

Spatio-temporal generalised frequency response functions over unbounded spatial domains [PDF]

open access: yes, 2010
The concept of generalised frequency response functions (GFRFs), which were developed for nonlinear system identification and analysis, is extended to continuous spatio-temporal dynamical systems normally described by partial differential equations (PDEs)
Billings, S.A.   +4 more
core   +1 more source

Forced vibration of a sheet under periodic aerodynamic excitation

open access: yesNihon Kikai Gakkai ronbunshu, 2020
This paper describes vibration characteristics of a cantilevered flexible sheet under the periodic aerodynamic excitation. In the experiment, movable plates(exciter) are set at the upstream side from the sheet in a wind-tunnel.
Keiichi HIROAKI   +2 more
doaj   +1 more source

Finite-frequency thermoelectric response in strongly correlated quantum dots

open access: yes, 2014
We investigate the finite-frequency thermal transport through a quantum dot subject to strong interactions, by providing an exact, nonperturbative formalism that allows us to carry out a systematic analysis of the thermopower at any frequency.
Chirla, Razvan, Moca, Catalin Pascu
core   +1 more source

Adaptive Inertia Control for Virtual Synchronous Generators to Enhance Response Performance of a Wind-Solar-Storage Combined Power Generation System

open access: yesCSEE Journal of Power and Energy Systems
The damage of extreme disasters to a power grid is becoming increasingly severe, and energy storage control technology is emerging as a measure to enhance grid resilience. In this study, a novel adaptive inertia control for virtual synchronous generators
Haibo Zhang   +3 more
doaj   +1 more source

Adaptive Performance Tuning for Voltage-Sourced Converters with Frequency Responses

open access: yesApplied Sciences, 2020
Renewable generation brings both new energies and significant challenges to the evolving power system. To cope with the loss of inertia caused by inertialess power electronic interfaces (PEIs), the concept of the virtual synchronous generator (VSG) has ...
Weichao Zhang, Xiangwu Yan, Hanyan Huang
doaj   +1 more source

Frequency response of electrochemical cells [PDF]

open access: yes
Impedance concepts can be applied to the analysis of battery electrodes, yielding information about the structure of the electrode and the processes occurring in the electrode.
Thomas, Daniel L.
core   +1 more source

Implementation Of Frequency Response Function On Tapper Bearing Maintenance [PDF]

open access: yes, 2019
Bearing acts as a pad that supports a shaft to rotate without excessive friction, hold the radial load and maintain the motion towards the left and right shafts (Thrust Load) when turning together.
Hamid, A. (Abdul)   +4 more
core  

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