Results 31 to 40 of about 1,521 (198)

A CONCISE OVERVIEW OF GENERATORS FOR WIND ENERGY SYSTEM [PDF]

open access: yesJournal of Sustainable Energy, 2020
Wind power generator have been operational since 1888. Over this period, various types of wind turbine generator have been developed from the existing types of electric machines.
AIKA T. A.   +3 more
doaj  

Diagnosis of Static Eccentricity in 3-Phase Synchronous Machines using a Pseudo Zero-Sequence Current

open access: yesEnergies, 2019
Large synchronous generators are the heart of the modern world, while producing the vast majority of the electric power consumed globally. Although they are robust devices, they are prone to degradation and failure.
Konstantinos N. Gyftakis   +3 more
doaj   +1 more source

Generalized Synchronization Trees [PDF]

open access: yes, 2014
This paper develops a generalized theory of synchronization trees. In their original formulation, synchronization trees modeled the behavior of nondeterministic discrete-time reactive systems and served as the foundational theory upon which process algebra was based.
James Ferlez   +2 more
openaire   +1 more source

Dynamic Patterns in the Small-Signal Behavior of Power Systems with Wind Power Generation

open access: yesEnergies
This paper investigates the dynamic patterns in the small-signal behavior of power systems with wind power generation. The interactions between synchronous generators and wind generators are investigated.
Luis Rouco
doaj   +1 more source

Fractional-Order Virtual Synchronous Generator

open access: yesIEEE Transactions on Power Electronics, 2023
In this letter, a novel control scheme is proposed by combining the fractional-order control and the virtual synchronous generator, whereby more degrees of freedom are involved in the controller design. A well-damped power control without oscillations is achieved. At the same time, a significant improvement in the inertial effect is attained.
Yun Yu   +5 more
openaire   +2 more sources

Molecular bases of circadian magnesium rhythms across eukaryotes

open access: yesFEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Small‐signal modelling and analysis of microgrids with synchronous and virtual synchronous generators

open access: yesIET Energy Systems Integration
In autonomous alternating current microgrids, the grid‐forming virtual synchronous generators can cooperate with the conventional synchronous generators to improve system inertia and frequency regulation capability.
Rui Liu   +3 more
doaj   +1 more source

Impact of active power recovery rate of DFIG wind farms on first swing rotor angle stability

open access: yesIET Generation, Transmission & Distribution, 2020
The first swing rotor angle stability is still an important stability challenge for modern power systems integrated with a large number of renewable energy‐based sources, such as wind farms and solar‐photovoltaic farms.
Enkhtsetseg Munkhchuluun   +2 more
doaj   +1 more source

IMPROVING THE ENERGY EFFICIENCY OF SHIP ELECTRIC INSTALLATIONS BY USING ASYNCHRONOUS GENERATORS

open access: yesПраці Інституту електродинаміки Національної академії наук України, 2020
The article considers one of the ways to increase the energy efficiency of marine autonomous power plants by using asynchronous generators with capacitor excitation instead of traditional generator sets with synchronous generators. A comparative analysis
M.Y. Mukha   +2 more
doaj   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

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