Results 51 to 60 of about 2,930 (265)

Passivity and Decentralized Stability Conditions for Grid-Forming Converters

IEEE Transactions on Power Systems
We prove that the popular grid-forming control, i.e., dispatchable virtual oscillator control (dVOC), also termed complex droop control, exhibits output-feedback passivity in its large-signal model, featuring an explicit and physically meaningful passivity index.
Xiuqiang He, Florian Dörfler
openaire   +3 more sources

DNA‐Templated 2D Heterostructures as Phototriggered Dynamic Nanohybrids: From Releasing Molecular Loads to Controlling Enzyme Biocatalytic Function

Advanced Functional Materials, EarlyView.
DNA strands are employed both as dynamic linkers and nanoscale templates for the integration of Ag2S nanoparticles on MoS2, which in turn imparted photothermal responsiveness; this feature permits the selective cargo (fluorophore, quantum dots or an enzyme) release from the MoS2 surface in response to local heat induced by light irradiation.
Kai Chen, Haosen Miao, Weiying Hong, Matteo Palma   +3 more
wiley   +1 more source

Exploring an Alternative to mRNA Vaccine Cold Chain Storage: MRNA‐Lipid Nanoparticle Stability When Dried in a Polymer Matrix

Advanced Functional Materials, EarlyView.
The nanostructure, size, and function of mRNA‐loaded lipid nanoparticles are evaluated before drying, within polymer microneedles, and after rehydration. The results reveal the polymer and LNP loadings required to recover nanostructure and preserve the delivery performance in dry‐state formulations.
Brendan P. Dyett, Shahad K. Alsaiari, John L. Daristotle, Timothy A. Forster, Alicia Lau, Dhruv Varshney, Rania Afaneh, Andrew R. Hanna, Charles Sloane, David Mankus, Haitao Yu, Jiali Zhai, DongSoo Yun, Lisa H. Tostanoski, Abigail Lytton‐Jean, Dan H. Barouch, Charlotte E. Conn, Robert Langer, Ana Jaklenec, Calum J. Drummond   +19 more
wiley   +1 more source

Adaptive power and virtual resistance cooperation control strategy of VSG-based GFM converters for grid transient stability enhancement

Global Energy Interconnection
With the increasing penetration level of renewable energy sources (RES) interfaced with the grids by power electronic converters, the grid forming (GFM) control of converters is recognized as one of the promising solutions in dealing with challenges such
Zhang Wen, Liangzhong Yao, Fan Cheng, Shuai Liang, Junpeng Deng, Siyang Liao, Beilin Mao   +6 more
doaj   +1 more source

Operation of a Grid-Forming Converter Controlled by the Flux Vector

IEEE Access
The electric power system is undergoing a significant transition. Renewable energy generation capacity has increased, leading to the displacement of synchronous generators (SG) and a growing concern about grid stability due to the decrease of rotating inertial energy. Grid-forming (GFM) converters have become a technological solution to this challenge,
Juan Dolado Fernández, Eduardo Rausell Navarro, José Luis Rodríguez Amenedo, Joaquin Eloy-Garcia Carrasco, Santiago Arnaltes Gómez   +4 more
openaire   +2 more sources

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

Advanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg, Thomas W. Pfeifer, Chuanzhen Zhou, Yong Kyu Choi, Duk‐Hyun Choe, Patrick E. Hopkins, Jon F. Ihlefeld   +6 more
wiley   +1 more source

Grid-Synchronization Stability of Converter-Based Resources—An Overview

IEEE Open Journal of Industry Applications, 2020
This paper presents an overview of the synchronization stability of converter-based resources under a wide range of grid conditions. The general grid-synchronization principles for grid-following and grid-forming modes are reviewed first. Then, the small-
Xiongfei Wang, Mads Graungaard Taul, Heng Wu, Yicheng Liao, Frede Blaabjerg, Lennart Harnefors   +5 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Wear-Out Analysis of a Grid-Forming Two-Phase Three-Wire Converter Under Unbalanced Load

IEEE Open Journal of Power Electronics
The grid-forming converter that supplies voltage magnitude and frequency is a key element for isolated remote communities, and then wear-out analysis is an essential figure of merit.
Joao H. de Oliveira, Allan F. Cupertino, Erick M. S. Brito, Danilo I. Brandao   +3 more
doaj   +1 more source

Saturation-informed current-limiting control for grid-forming converters

Electric Power Systems Research
Electric Power Systems Research ...
Maitraya Avadhut Desai, Xiuqiang He, Linbin Huang, Florian Dörfler   +3 more
openaire   +3 more sources