Results 31 to 40 of about 64,776 (264)

A Smooth Transition from Powerlessness to Absolute Power

open access: yesJournal of Artificial Intelligence Research, 2013
We study the phase transition of the coalitional manipulation problem for generalized scoring rules. Previously it has been shown that, under some conditions on the distribution of votes, if the number of manipulators is o(sqrt{n}), where n is the number of voters, then the probability that a random profile is manipulable by the coalition goes to zero ...
Elchanan Mossel   +2 more
openaire   +4 more sources

Wind Power Smoothing by Controlling the Inertial Energy of Turbines With Optimized Energy Yield

open access: yesIEEE Access, 2017
Power fluctuations caused by wind speed variations affect power quality, especially in weak or isolated grids, and degrade the reliability of wind power converters.
Xianxian Zhao   +3 more
doaj   +1 more source

Power Series and Smooth Functions Equivalent to a Polynomial [PDF]

open access: yesProceedings of the American Mathematical Society, 1986
An algebraic criterion is given for a power series in n n variables over a field of characteristic 0 to be equivalent to a ...
openaire   +1 more source

An integrated control strategy for D-PMSG wind power generation systems

open access: yesZhejiang dianli
Smoothing output power fluctuations of wind power generation systems is crucial for the stable operation of power grid. Based on the port-controlled Hamiltonian (PCH) model, an integrated control strategy for rotor speed tracking and power smoothing in ...
XIA Bingqing   +4 more
doaj   +1 more source

Discrete Wavelet Transform for the Real-Time Smoothing of Wind Turbine Power Using Li-Ion Batteries

open access: yesEnergies, 2021
Energy Storage Systems (EES) are key to further increase the penetration in energy grids of intermittent renewable energy sources, such as wind, by smoothing out power fluctuations.
Andrea Mannelli   +4 more
doaj   +1 more source

The Smooth Power of the 'Neandertal Method'

open access: yesThe Mathematical Intelligencer
Abstract We describe an algorithmic method to transform a Euclidean wallpaper pattern into a \emph{Circle Limit}-style picture à la Escher. The design goals for the method are to be mathematically sound, aesthetically pleasing and fast to compute.
Aaron Montag   +2 more
openaire   +2 more sources

Flatness and Fibred Powers over Smooth Varieties

open access: yesJournal of Algebra, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Galligo, André, Kwieciński, Michal
openaire   +2 more sources

Hybrid Model-Based BESS Sizing and Control for Wind Energy Ramp Rate Control

open access: yesEnergies, 2022
This paper presents a hybrid model constituting dynamic smoothing technique and particle swarm optimization techniques to optimally size and control battery energy storage systems for wind energy ramp rate control and power system frequency performance ...
Abebe Tilahun Tadie   +2 more
doaj   +1 more source

Supercapacitor application for PV power smoothing [PDF]

open access: yes2018 53rd International Universities Power Engineering Conference (UPEC), 2018
The penetration of renewable energy technologies causes grid stability problems and voltage flickering due to fluctuations of the weather conditions, which affect the produced renewable power. The system is first analyzed in order to define the operating point and the controlling parameters, in which the produced power is shared correctly between the ...
Argyrou, MC   +5 more
openaire   +2 more sources

Modeling of hydrogen production system for photovoltaic power generation and capacity optimization of energy storage system

open access: yesFrontiers in Energy Research, 2022
Hydrogen production using solar energy is an important way to obtain hydrogen energy. However, the inherent intermittent and random characteristics of solar energy reduce the efficiency of hydrogen production. Therefore, it is necessary to add an energy
Daohong Wei   +5 more
doaj   +1 more source

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