Results 101 to 110 of about 6,449 (263)

Mechanism and Control Analysis of Synchronous Frequency Resonance in Distributed Power Generation System Connected to Grid

Energy Science &Engineering, EarlyView.
Small‐signal modeling reveals that insufficient system damping positions conjugate poles near the imaginary axis, fundamentally explaining the SFR mechanism. A virtual resistance control is consequently proposed to damp the resonance and effectively suppress SFR, which is validated through Hardware‐in‐the‐Loop experiments.
Yujie Gu, Jianbo Yi, Haoran Rui, Qi Huang   +3 more
wiley   +1 more source

Virtual inertia control to active support of the variable-speed wind turbine in variable frequency limit time

Frontiers in Energy Research
Constraining the virtual inertia of variable-speed wind turbines within the variable frequency limit time will be the key to improving the wind power’s reliability in actively supporting the system frequency.
Gu Tingyun, Zhang Houyi, Li Bowen, Mao Junyi, Fan Qiang, Xu Yutao, Feng Qihui   +6 more
doaj   +1 more source

Research on a virtual inertia control strategy for a wind-Storage combined power generation system based on model predictive control

Systems Science & Control Engineering
This research addresses the issue of low grid inertia in wind energy systems by proposing an improved control strategy that integrates model predictive control (MPC) with virtual synchronous generator (VSG) control.
Wenqin Song, Xumin Liu, Guojun Yang, Zhuxiu Wang, Ding Li, Sheng Xue   +5 more
doaj   +1 more source

Continuous infectious diseases coverage by merging with a hospitalist practice in a small community hospital system

Journal of Hospital Medicine, EarlyView.
Abstract Access to infectious diseases physicians has been increasingly difficult, as many infectious diseases fellowship programs have unfilled positions. This has coincided with increasing numbers of internal medicine residents pursuing hospitalist medicine.
Michael S. Wang, Kristina Aleksoniene, Jason C. Tompkins, Richard W. Douce, John W. Froggatt 3rd, Mark S. Harrison   +5 more
wiley   +1 more source

Enhancing Virtual Inertia Control in Microgrids: A Novel Frequency Response Model Based on Storage Systems

Batteries
The integration of renewable resources in isolated systems can produce instability in the electrical grid due to its intermintency. In today’s microgrids, which lack synchronous generation, physical inertia is substituted for inertia emulation.
Adrián Criollo, Luis I. Minchala-Avila, Dario Benavides, Paul Arévalo, Marcos Tostado-Véliz, Daniel Sánchez-Lozano, Francisco Jurado   +6 more
doaj   +1 more source

Implementing in hospital technology‐assisted mobility initiatives: A scoping review

Journal of Hospital Medicine, EarlyView.
Abstract Background Hospitalized patients are typically inactive, though evidence highlights the effectiveness of mobility‐enhancing interventions in improving health outcomes. Technology‐assisted approaches are increasingly used to encourage patient movement.
Pamela Mathura, Amy Wenzel, Liz Dennett, Narmin Kassam   +3 more
wiley   +1 more source

A Framework for Subgroup Dynamics Through the System Dynamics Lens: An Integrative Review of the Attribute and the Network Views

Journal of Organizational Behavior, EarlyView.
ABSTRACT Subgroups are dynamic entities evolving constantly in response to changing contexts and time. Although scholars from both the attribute and the network views have acknowledged that subgroups are inherently complex and fluid, research in these traditions has remained bifurcated, with limited efforts to integrate the two perspectives to more ...
Jinhee Moon, Chunghyun Oh, Chou‐Yu Tsai, Semin Park   +3 more
wiley   +1 more source

Predefined‐Time Dynamic Surface Control of Tank Horizontal Stabilization System With Disturbance

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Modern new tanks are difficult to achieve high precision control of the horizontal stabilization system due to electromechanical coupling and road surface disturbance during high‐speed combat. A predefined‐time dynamic surface controller (DSCPT) is proposed for the fast stabilization and strong disturbance problems of the tank horizontal ...
Zhicheng Fan, Shusen Yuan, Wenxiang Deng, Haoqi Wen, Haochuan Sun, Jianyong Yao   +5 more
wiley   +1 more source

Trajectory Control of Manipulator Robots With Uncertainties: A Saturated Continuous Integral Sliding Mode Approach

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study addresses the trajectory tracking control for manipulator robots with uncertainties. The main objective is to ensure that the robot follows a desired trajectory despite the presence of uncertainties/disturbances and considering control input constraints. The approach is developed in the framework of continuous integral sliding modes.
Emanuel Ortiz‐Ortiz, Juan Eduardo Velázquez‐Velázquez, Ramón Silva‐Ortigoza, Rosalba Galván‐Guerra   +3 more
wiley   +1 more source

Bending Analysis of Thickness‐ and Shear‐Deformable Materially Imperfect Composite Shells With von Kármán‐Type Geometric Nonlinearities

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Geometrically nonlinear static analysis of materially imperfect composite doubly curved shells is investigated via the generalised differential quadrature method. The effects of both shear and thickness deformation are considered through a thickness‐ and shear‐deformable third‐order theory formulated in curvilinear coordinates, while the ...
Behrouz Karami, Mergen H. Ghayesh, Shahid Hussain, Marco Amabili   +3 more
wiley   +1 more source