Results 51 to 60 of about 9,425 (265)
IEEE AccessVirtual synchronous machine (VSM) has been applied in voltage source converter high voltage direct current (VSC-HVDC) system. This paper proposes a stability evaluation model for ‘rate of change of frequency-transient frequency excursion’ ...
Chang Li +4 more
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The Effect of Excitation System on Synchronous Generator Transient Stability
IJIREEICE, 2016 The consequences of electric power outages impose studies of models that combine representations of the various components such as generators, loads, and networks in the power system. It is clear that the main role of the excitation system is supplying the field winding of the synchronous generator with the dc current for generation, as well as voltage
Mansour Babiker Idris, Ali Juma Elzubia
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Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics
Advanced Functional Materials, EarlyView.Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha +18 more
wiley +1 more source
Review of transient control strategies for grid-forming converters under grid voltage sag conditions
电力工程技术As a large amount of renewable energy is integrated into the grid via power electronic converters，the power system is faced with challenges，such as reduced inertia，diminished disturbance resistance，and declining transient support capabilities.
Yuxuan LIN, Wei LI, Ling ZHU, Chong REN
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Advanced Functional Materials, EarlyView.A vertically stacked, DEA‐driven photonic array inspired by cephalopod skin, featuring highly crystalline colloidal crystal gels with vivid color, low FWHM and scalability is presented. The multilayer design removes lateral pixel interference, achieving near‐100% fill factor with fully independent RGB actuation.
Maga Kim +11 more
wiley +1 more source
Advanced Functional Materials, EarlyView.A chiral photodetector capable of selectively distinguishing left‐ and right‐handed circularly polarized light is experimentally demonstrated. The device, which features a nanopatterned electrode inverse‐designed by a genetic algorithm within a metal–dielectric–metal nanocavity that incorporates a vacuum‐deposited small‐molecule multilayer, exhibits ...
Kyung Ryoul Park +3 more
wiley +1 more source
Transient Stability Analysis of a Synchronous Motor by Lyapunov Method.
IEEJ Transactions on Industry Applications, 1991 Since a synchronous motor is held heavy nonlinearity, the transient stability analysis of it is generally laborious. Conventionally, this analysis has been used numerical solution or equal-area method, whereas this paper is proposed a new transient stability criterion by applying Lyapunov method which is powerful for nonlinear systems to estimate these
Tomonobu Senjyu, Katsumi Uezato
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Advanced Functional Materials, EarlyView.This study demonstrates coherent control of 15N nuclear spins coupled to VB−${\text{V}}_{\text{B}}^{-}$ centers in isotope‐enriched hexagonal boron nitride. Selective addressing via spin‐state mixing enables Rabi driving, quantum gates, and coherence times exceeding 10 μs$\umu{\rm s}$.
Adalbert Tibiássy +6 more
wiley +1 more source
Transient stability analysis and enhancement of wind farm integrated VSC-HVDC system
CSEE Journal of Power and Energy SystemsFollowing severe faults in wind farm integrated voltage source converter (VSC) based high-voltage direct current (HVDC) system, wind turbines (WTs) may lose synchronization with wind farm side VSC (WFVSC), which jeopardizes the reliable delivery and ...
Guanqun Li +3 more
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Improving Power System Transient Stability with Static Synchronous Series Compensator [PDF]
American Journal of Applied Sciences, 2011 Problem statement: Modern power system consists of the complicated network of transmission lines and carries heavy demand. Thus they cause in the stability problem. One of the major interests of power utilities is the improvement of power system transient behavior.
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