Results 21 to 30 of about 989,388 (292)

Hierarchical frequency control strategy of doubly-fed induction diesel generator under emergency condition

open access: yesEnergy Reports, 2022
Natural disasters lead to the uncertain topological structure of the urban distribution network. It is difficult for the communication system to recover quickly, which brings great difficulties to restoring the power supply.
Zhichao Liu   +7 more
doaj   +1 more source

Analysis of the effect of clock drifts on frequency regulation and power sharing in inverter-based islanded microgrids [PDF]

open access: yes, 2018
© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new ...
Castilla Fernández, Miguel   +5 more
core   +2 more sources

Quantitative principles of cis-translational control by general mRNA sequence features in eukaryotes. [PDF]

open access: yes, 2019
BackgroundGeneral translational cis-elements are present in the mRNAs of all genes and affect the recruitment, assembly, and progress of preinitiation complexes and the ribosome under many physiological states.
A Battle   +71 more
core   +3 more sources

Digital control of dual-load LCLC resonant converters [PDF]

open access: yes, 2005
The paper proposes the analysis, design and realisation of dual-output resonant LCLC converters with independent output regulation, employing a single power stage and combined PWM and frequency control.
Ang, Y A   +3 more
core   +1 more source

Optimization of constant power control of wind turbines to provide power reserves [PDF]

open access: yes, 2013
In several countries, the wind power penetration increased tremendously in the last years. As the current wind turbines do not participate in frequency control nor reserve provision, this may compromise the proper functioning of the primary control and ...
De Kooning, Jeroen   +4 more
core   +1 more source

Stability and Frequency Regulation of Inverters with Capacitive Inertia [PDF]

open access: yes, 2017
In this paper, we address the problem of stability and frequency regulation of a recently proposed inverter. In this type of inverter, the DC-side capacitor emulates the inertia of a synchronous generator.
De Persis, Claudio   +4 more
core   +3 more sources

Model‐based receding horizon control of wind farms for secondary frequency regulation

open access: yesWind Energy, 2017
AbstractIn this study, we propose the use of model‐based receding horizon control to enable a wind farm to provide secondary frequency regulation for a power grid. The controller is built by first proposing a time‐varying one‐dimensional wake model, which is validated against large eddy simulations of a wind farm at startup.
Shapiro, Carl R.   +4 more
openaire   +3 more sources

Transient Frequency Modeling and Characteristic Analysis of Virtual Synchronous Generator

open access: yesEnergies
The large-scale integration of renewable energy into power systems significantly alters their operational characteristics, reducing system inertia and posing challenges to transient frequency stability.
Zhou Su, Guoqing Yang, Lixiao Yao
doaj   +1 more source

Frequency Coordinated Control Strategy for an HVDC Sending-End System with Wind Power Integration Based on Fuzzy Logic Control

open access: yesEnergies, 2021
Under the background of high wind power permeability, the frequency regulation capability of high voltage direct current (HVDC) sending-end system tends to deteriorate.
Yuhong Wang   +5 more
doaj   +1 more source

Transcriptional repressor ZEB2 promotes terminal differentiation of CD8⁺ effector and memory T cell populations during infection [PDF]

open access: yes, 2015
ZEB2 is a multi-zinc-finger transcription factor known to play a significant role in early neurogenesis and in epithelial-mesenchymal transition-dependent tumor metastasis.
Agata Stryjewska   +72 more
core   +3 more sources

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