Results 51 to 60 of about 60,225 (279)

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

Comparative analysis of existing models for power-grid synchronization

open access: yes, 2015
The dynamics of power-grid networks is becoming an increasingly active area of research within the physics and network science communities. The results from such studies are typically insightful and illustrative, but are often based on simplifying ...
Motter, Adilson E., Nishikawa, Takashi
core   +1 more source

Test system requirements for modelling future power systems [PDF]

open access: yes, 2010
This paper discusses the need for new test system models to be developed and made available to researchers. A number of features of such test systems are proposed.
Bell, K.R.W., Tleis, A.N.D.
core   +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

Supervisory Control Synthesis of Discrete-Event Systems using Coordination Scheme

open access: yes, 2010
Supervisory control of discrete-event systems with a global safety specification and with only local supervisors is a difficult problem. For global specifications the equivalent conditions for local control synthesis to equal global control synthesis may
Brandt   +16 more
core   +1 more source

High-speed synchronous generators. A critical assessment [PDF]

open access: yes, 2017
Considering that there are electromagnetic, mechanical and thermal constraints that determine the design of high-speed electrical machines, the criteria that lead to adequate selection of the machine are established in this work.
Andrada Gascón, Pedro   +1 more
core   +2 more sources

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

A novel conceptual design method for aviation PMSG based on thermal modeling

open access: yesInternational Journal for Simulation and Multidisciplinary Design Optimization
A multi-disciplinary optimization design method for permanent magnet synchronous generators based on thermal modeling is proposed in this paper. The complex coupling among the thermal, electromagnetic, and mechanical systems and the difficulties in ...
Wang He   +4 more
doaj   +1 more source

A nonlinear adaptive excitation controller design for two‐axis models of synchronous generators in multimachine power systems to augment the transient stability during severe faults

open access: yesIET Generation, Transmission & Distribution, 2022
This paper presents an excitation controller design process for multimachine power systems with synchronous generators using an adaptive backstepping approach to ensure robust performance against parametric uncertainties as well as to improve the ...
Tushar Kanti Roy, Md Apel Mahmud
doaj   +1 more source

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