Results 11 to 20 of about 6,200,319 (299)

Characterization of Frequency Stability in Precision Frequency Sources [PDF]

open access: yesProceedings of the IEEE, 1991
The authors present a short review of the progress that has occurred during years 1955-91 in both the theoretical and practical characterization of frequency stability of precision frequency sources. The emphasis is on the evolution of ideas and concepts for the characterization of random noise processes in such standards in the time domain and the ...
F L Walls
exaly   +3 more sources

Stabilization of grid frequency through dynamic demand control [PDF]

open access: yes, 2007
Frequency stability in electricity networks is essential to the maintenance of supply quality and security. This paper investigates whether a degree of built-in frequency stability could be provided by incorporating dynamic demand control into certain ...
Freris, Leon L.   +2 more
core   +4 more sources

Frequency stability of a wavelength meter and applications to laser frequency stabilization [PDF]

open access: yesApplied Optics, 2015
Interferometric wavelength meters have attained frequency resolutions down to the MHz range. In particular, Fizeau interferometers, which have no moving parts, are becoming a popular tool for laser characterization and stabilization. In this article, we characterize such a wavelength meter using an ultra-stable laser in terms of relative frequency ...
Saleh, Khaldoun   +4 more
openaire   +4 more sources

Primary Frequency Stability Support of a DFIG in Association With Pitch Angle Control

open access: yesFrontiers in Energy Research, 2022
For an electric power grid that has large penetration levels of variable renewable energy including wind generation and photovoltaics, the system frequency stability is jeopardized, which is manifest in lowering frequency nadir and settling frequency ...
Xiuli Si   +5 more
doaj   +1 more source

The infrastructure quality of GPS measurements [PDF]

open access: yesTehnika, 2015
The aim of this paper is to present and show the role of the law mentioned in GPS products as well as product quality verification by accredited metrology laboratory.
Ristić Kornelija T.   +2 more
doaj   +1 more source

Frequency Response in the Presence of Renewable Generation: Challenges and Opportunities

open access: yesIEEE Open Access Journal of Power and Energy, 2021
Due to their many advantages, renewable energy resources (RERs) are proliferating rapidly to satisfy a significant portion of the global energy demand. It is predicted that the importance of RER generation will continue to increase in the future of the ...
Nga Nguyen   +3 more
doaj   +1 more source

QUASI-DYNAMIC MODEL OF THE INTERCONNECTED POWER SYSTEM OF UKRAINE FOR A FREQUENCY STABILITY STUDY

open access: yesПраці Інституту електродинаміки Національної академії наук України, 2022
Significant integration of renewables into Ukraine's interconnected power system (IPS) requires developing the appro-priate quasi-dynamic (QD) model to study power system operation in such conditions.
V.V. Pavlovsky   +3 more
doaj   +1 more source

Planar-Waveguide External Cavity Laser Stabilization for an Optical Link with 1E-19 Frequency Stability [PDF]

open access: yes, 2011
We stabilized the frequency of a compact planar-waveguide external cavity laser (ECL) on a Fabry-P\'erot cavity (FPC) through a Pound-Drever-Hall scheme.
Davide Calonico   +23 more
core   +1 more source

Single-frequency diode-pumped semiconductor laser tuned on a Cesium transition: frequency stability and linewidth study

open access: yes, 2008
International audienceSingle-frequency diode-pumped semiconductor laser tuned on a Cesium transition: frequency stability and linewidth ...
Garnache, Arnaud   +5 more
core   +8 more sources

Pulsed Optically Pumped Rubidium Clock With High Frequency-Stability Performance [PDF]

open access: yes, 2012
In this paper, we present the performance of a vapor-cell rubidium frequency standard working in the pulsed regime, in which the clock signal is represented by a Ramsey pattern observed on an optically detected laser absorption signal.
Micalizio, Salvatore   +5 more
core   +3 more sources

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