Results 41 to 50 of about 65,918 (309)

Brain-Switches for Asynchronous Brain−Computer Interfaces: A Systematic Review [PDF]

open access: yes, 2020
A brain–computer interface (BCI) has been extensively studied to develop a novel communication system for disabled people using their brain activities. An asynchronous BCI system is more realistic and practical than a synchronous BCI system, in that, BCI
Han, Chang-Hee   +2 more
core   +1 more source

Research on Distributed PV Storage Virtual Synchronous Generator System and Its Static Frequency Characteristic Analysis

open access: yesApplied Sciences, 2018
The increasing penetration rate of grid connected renewable energy power generation reduces the primary frequency regulation capability of the system and poses a challenge to the security and stability of the power grid.
Xiangwu Yan   +4 more
doaj   +1 more source

Assessment of torque components in brushless permanent-magnet machines through numerical analysis of the electromagnetic field [PDF]

open access: yes, 2005
For the calculation of torque in brushless (BL) alternating current motors a local method is proposed, based on the Maxwell stress theory and the filtered contributions due to the harmonics of the magnetic vector potential in the motor air gap.
Dellinger, S.J.   +4 more
core   +1 more source

Review on grid-forming converter control methods in high-proportion renewable energy power systems

open access: yesGlobal Energy Interconnection, 2022
Grid-forming (GFM) converters can provide inertia support for power grids through control technology, stabilize voltage and frequency, and improve system stability, unlike traditional grid-following (GFL) converters.
Yuting Teng   +5 more
doaj   +1 more source

An Experimental Nexos Laboratory Using Virtual Xinu [PDF]

open access: yes, 2011
The Nexos Project is a joint effort between Marquette University, the University of Buffalo, and the University of Mississippi to build curriculum materials and a supporting experimental laboratory for hands-on projects in computer systems courses.
Brylow, Dennis, Ruth, Paul
core   +2 more sources

Virtual Friction: Experimental Validation in a Microgrid of 3 Virtual Synchronous Machines

open access: yes2022 IEEE 23rd Workshop on Control and Modeling for Power Electronics (COMPEL), 2022
Virtual synchronous machines (VSMs) are a promising technology to integrate distributed energy sources and storage into power grids. The VSM is a power converter that emulates the behavior of a synchronous machine, providing grid services which are necessary to operate a power system in a stable manner.
Reissner, Florian   +4 more
openaire   +1 more source

A Comprehensive VSM Control Strategy Designed for Unbalanced Grids

open access: yesEnergies, 2019
A virtual synchronous machine (VSM) is a converter which, compared to other types of converters, has more friendly interactions with the power grid because it is able to simulate the external characteristics of a synchronous machine, which can provide ...
Huiyu Miao   +4 more
doaj   +1 more source

Virtual Partners Improve Synchronization in Human−Machine Trios

open access: yesCognitive Science
Abstract The interplay between auditory and motor processes in sensorimotor synchronization is crucial for achieving a cohesive group performance, particularly in musical groups. This study addressed the impact of virtual partners on synchronization performance in human trios.
Bavo, Van Kerrebroeck   +3 more
openaire   +2 more sources

Coordinated Damping Control Design for Power System With Multiple Virtual Synchronous Generators Based on Prony Method

open access: yesIEEE Open Access Journal of Power and Energy, 2021
With more renewables integrated into power grids, the systems are being transformed into low inertia power electronic dominated systems. In this situation, the virtual synchronous generator (VSG) control strategy was proposed to deal with insufficient ...
Min Zhao   +4 more
doaj   +1 more source

Numerical study of circle fractal grid perforated plate as a turbulent generator in combustion chamber [PDF]

open access: yes, 2013
Fractal grids can be used to design turbulent flows with low power losses and high turbulence intensities for intense yet economic mixing over a region of designed length and location.
Khalid, Amir   +3 more
core   +1 more source

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