Results 51 to 60 of about 1,490 (263)

Oscillation Suppression of Grid-Following Converters by Grid-Forming Converters with Adaptive Droop Control

Energies
The high penetration of renewable energy sources (RESs) and power electronics devices has led to a continuous decline in power system stability. Due to the instability of grid-following converters (GFLCs) in weak grids, the grid-forming converters (GFMCs)
Lifeng Qiu, Miaosong Gu, Zhongjiang Chen, Zhendong Du, Ligang Zhang, Wenrui Li, Jingyi Huang, Jingyang Fang   +7 more
doaj   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Analysis of inertia damping characteristics of GFM wind turbines

Zhejiang dianli
Grid-forming （GFM） converters， known for their superior inertia damping characteristics， have emerged as a center research focus in the renewable energy sector. As a result， the damping characteristics of GFM wind power converters are first examined. The
WU Shuangxi, GUO Liang, LIU Yang, HOU Kai, SHAN Xin, SUN Sujuan, XU Xiao   +6 more
doaj   +1 more source

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

How many grid-forming converters are needed? – A techno-economic perspective

iEnergy
Renewable generation is rapidly increasing and transforming power systems toward “new-type power systems”. The integration of renewable energy resources necessitates a shift from conventional grid-following converters (GFLs) to advanced grid-forming ...
Guoxuan Cui, Hongyang Jia, Ning Zhang, Fei Teng   +3 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

Adaptability Analysis of Transmission Line Protection under the Control Strategy of Grid-Forming Energy Storage Converter

Zhongguo dianli
Under the dual carbon target, a large number of new energy sources are connected to the power grid, and relay protection is becoming increasingly important as the primary guarantee for the safe and stable operation of the power system.
Xiaoping FENG, Qidi CHEN, Qingchun ZHAO, Xing WANG, Bin LI, Hua XIE   +5 more
doaj   +1 more source