Results 31 to 40 of about 2,729,391 (294)

Identifying spatially asymmetric high-order harmonic emission in the falling edge of an intense laser pulse [PDF]

open access: yes, 2016
Two different induced effects of a laser falling edge on high-order harmonic generation (HHG) are resolved by numerically solving the full-dimensional electronic time-dependent Schrödinger equation beyond the Born–Oppenheimer approximation.
M. Vafaee, H. Ahmadi, A. Maghari
semanticscholar   +1 more source

Controlling charge resonance enhanced ionization of X2+ isotope molecules for generating high-intensity attosecond pulse

open access: yes四川大学学报. 自然科学版, 2021
Using the characteristics of harmonic generation from X2+ isotope molecules (H2+, D2+ and T2+), an effective method to generate a high-intensity spectral continuum and isolated attosecond pulse has been theoretically proposed. It is found that, driven by
FENG Li-Qiang
doaj  

Wind Turbine Oriented Solutions to Improve Power Quality and Harmonic Compliance of AC Offshore Wind Power Plants

open access: yesIEEE Access, 2021
The operation of offshore wind power plants with respect to power quality and grid code compliance must be verified for different conditions in the design phase using harmonic analysis methods.
Carlos Ruiz   +4 more
doaj   +1 more source

The X-Ray Emission Effectiveness of Plasma Mirrors: Reexamining Power-Law Scaling for Relativistic High-Order Harmonic Generation

open access: yesScientific Reports, 2020
Ultrashort pulsed lasers provide uniquely detailed access to the ultrafast dynamics of physical, chemical, and biological systems, but only a handful of wavelengths are directly produced by solid-state lasers, necessitating efficient high-power frequency
M. R. Edwards, J. Mikhailova
semanticscholar   +1 more source

A Two-Stage Sequential Configuration Strategy of PPF and APF for Wind Farm Harmonic Mitigation

open access: yesEnergies
Large-scale wind integration introduces significant harmonic degradation and resonance risks. Traditional strategies primarily targeting Total Harmonic Distortion (THD) often struggle with individual node violations and high investment costs.
Huajia Wang   +4 more
doaj   +1 more source

Some methods for harmonic emission determination in wind power plants

open access: yesInternational Conference on Harmonics and Quality of Power, 2018
The connection of new installations, as wind power plants, into the public grid requires that some conditions are fulfilled. Their aim is among others to ensure a proper power quality in the grid and to ensure a high probability of electromagnetic ...
D. Schwanz, M. Bollen, A. Larsson
semanticscholar   +1 more source

Harmonic distortion in public low-voltage grids Comparison of the situation in Colombia and Germany

open access: yesIngeniería e Investigación, 2015
Current and voltage harmonic levels in LV grids depend not only on the harmonic emission of non-linear loads, but also on the characteristics of the grid and the voltage distortion of the upstream grid.
Ana María Blanco Castañeda   +5 more
doaj   +1 more source

Effect of spin-orbit coupling on the high harmonics from the topological Dirac semimetal Na3Bi

open access: yesnpj Computational Materials, 2022
In this work, we performed extensive first-principles simulations of high-harmonic generation in the topological Diract semimetal Na3Bi using a first-principles time-dependent density functional theory framework, focusing on the effect of spin-orbit ...
Nicolas Tancogne-Dejean   +2 more
doaj   +1 more source

Comparison of Allowable Harmonic Emission Value Distribution Methods at the Point of Common Coupling of High Voltage System

open access: yesZhongguo dianli
With a large number of nonlinear loads connected to the power grid, the harmonic problems caused by them are becoming more and more serious. Various countries or organizations have formulated harmonic standards to constrain the harmonic emission values ...
Shun TAO   +4 more
doaj   +1 more source

Assessment Method of Wind Farm Harmonic Emission Value Based on Improved Complex Linear Regression Model

open access: yesMATEC Web of Conferences, 2017
Wind turbine filter and reactive power compensation devices lead to the harmonic impedance of wind farm is not much larger than that of the utility, so the influence by the wind farm harmonic impedance can not be neglected while assessing the harmonic ...
Chen Tiantian   +4 more
doaj   +1 more source

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