Results 81 to 90 of about 1,580,709 (290)

Grid‐forming inverter control design for PV sources considering DC‐link dynamics

open access: yesIET Renewable Power Generation
A grid‐forming inverter in an inverter‐dominated grid should operate as a dispatchable voltage source, which is difficult to achieve when the inverter is interfaced with nonlinear dc sources such as photovoltaic (PV) arrays.
Ishita Ray, Leon M. Tolbert
doaj   +1 more source

Disturbance Rejection Control of Grid-Forming Inverter for Line Impedance Parameter Perturbation in Weak Power Grid

open access: yes
When a grid-forming (GFM) inverter is connected to a low- or medium-voltage weak power grid, the line impedance with resistive and inductive characteristics will cause power coupling.
Li, H, Hui Li, Huang, M, Mayue Huang
core   +1 more source

Defect‐Templated Phase Engineering in Atomically Thin Metals

open access: yesAdvanced Materials, EarlyView.
Graphene defects are transformed from passive imperfections into programmable templates for phase‐selective growth of atomically thin silver. Plasma‐generated boundary defects favor Ag(1), whereas sp3‐rich zero‐layer graphene promotes Ag(2). This defect‐directed intercalation links local graphene chemistry to crystalline phase, electronic structure ...
Arpit Jain   +25 more
wiley   +1 more source

A simple estimation method of grid‐forming inverter inertia based on rate of change of frequency

open access: yesIET Power Electronics
Inertia is the core index of the estimation of power system frequency stability; a simple estimation method of grid‐forming inverter inertia based on the rate of change of frequency (RoCoF) is proposed in this paper.
Gang Han   +7 more
doaj   +1 more source

A review of intelligent predictive control in grid-forming and grid-following inverters for enhanced smart grids

open access: yesEnergy Nexus
The transition to renewable generation is replacing synchronous generators with inverter-based resources. This lowers system inertia and shifts the task of maintaining grid stability from rotating mass onto the control of the inverters themselves.
Maipelo Pheto   +4 more
doaj   +1 more source

Control of a Grid-Forming Inverter Based on Sliding-Mode and Mixed H-2/H-infinity Control

open access: yes, 2017
A grid-forming inverter (GFI) is an important component for operation of an islanded microgrid. Its purpose, similar to a conventional slack bus generator, is to build up a reference voltage for other distributed generating units in the microgrid ...
Bian J(卞晶)   +5 more
core  

Moiré Phase Mapping in Twisted Bilayer Liquid Crystals with Reconfigurable Light Polarization States

open access: yesAdvanced Materials, EarlyView.
Twisted bilayer liquid crystals are developed by vertical stacking assembly of two liquid crystals having designer domains and optical properties. These moiré‐symmetry, twisted liquid crystals demonstrate reconfigurable polarization states, moiré patterns and phases controlled by twist angles, providing a route to design active optical devices for ...
Jordan A. Wilson   +7 more
wiley   +1 more source

Estratégia híbrida de controle para inversores trifásicos conectados à rede baseada em controladores deadbeat e proporcional+ressonante [PDF]

open access: yes, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2014.Neste trabalho apresentam-se metodologias de projeto de controladores de corrente para inversores ...
Andreta, André Gutierrez
core  

Grid-Forming Converter Control Method to Improve DC-Link Stability in Inverter-Based AC Grids [PDF]

open access: yes, 2021
As renewable energy sources with power-electronic interfaces become functionally and economically viable alternatives to bulk synchronous generators, it becomes vital to understand the behavior of these inverter-interfaced sources in ac grids devoid of ...
Ray, Ishita
core  

Fabrication of Aligned Polycaprolactone Nanofibrillar Bundles to Control Cell‐Mediated Collagen Deposition in Engineered Cartilage

open access: yesAdvanced Materials, EarlyView.
Melt electrofibrillation (MEF) enables the fabrication of nanofibrillar PCL scaffolds with defined architectures that guide cellular alignment and retention during cartilage tissue engineering. Unlike conventional melt electrowriting, MEF consistently directs collagen type II‐rich extracellular matrix organization, providing a tunable platform to ...
Alba Pueyo Moliner   +10 more
wiley   +1 more source

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