Results 61 to 70 of about 1,606,441 (243)

Influence of Load Dynamics on Converter-Dominated Isolated Power Systems

Applied Sciences, 2021
The operation of isolated power systems with 100% converter-based generation requires the integration of battery energy storage systems (BESS) using grid-forming-type power converters.
José Gouveia, Carlos L. Moreira, João A. Peças Lopes   +2 more
doaj   +1 more source

Dynamic Complex-Frequency Control of Grid-Forming Converters

IECON 2024 - 50th Annual Conference of the IEEE Industrial Electronics Society
Complex droop control, alternatively known as dispatchable virtual oscillator control (dVOC), stands out for its unique capabilities in synchronization and voltage stabilization among existing control strategies for grid-forming converters. Complex droop control leverages the novel concept of ``complex frequency'', thereby establishing a coupled ...
Roger Domingo-Enrich, Xiuqiang He 0002, Verena Häberle, Florian Dörfler   +3 more
openaire   +4 more sources

Field Report from Collaborative Research Center 1625: Heterogeneous Research Data Management Using Ontology Representations

Advanced Engineering Materials, EarlyView.
A unified research data management framework for heterogeneous materials data is presented. The system integrates multimodal datasets using ontologies and knowledge graphs, enabling interoperability and FAIR (findable, accessible, interoperable, reusable) data principles. By linking data across scales and workflows, it supports reproducible, Artifitial
Doaa Mohamed, Samuel García Vázquez, Behnam Mardani, Victor Dudarev, Alfred Ludwig, Maribel Acosta, Markus Stricker   +6 more
wiley   +1 more source

Grid‐forming requirements based on stability assessment for 100% converter‐based Irish power system

IET Renewable Power Generation, 2022
The fault response of a 100% converter‐based system can be significantly different to that of a synchronous generator‐based system, considering the lower capacity headroom, but flexible control capability, of power electronic converters.
Xianxian Zhao, Priyanko Guha Thakurta, Damian Flynn   +2 more
doaj   +1 more source

Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals

Advanced Engineering Materials, EarlyView.
This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao, Sriram Subramanian, Gianluca Memoli   +2 more
wiley   +1 more source

Harmonic interaction analysis method for multi-machine parallel system of grid-forming converters

Frontiers in Energy Research
When grid-forming converters operate in parallel with the grid, interactions among converters and between converters and the grid may induce harmonic amplification.
Ming Li, Yunping Zheng, Sijia Zong, Zhumabieke Abai, Chenglong Lan, Tuerhong Yaxiaer   +5 more
doaj   +1 more source

Dual Grid-Forming Converter

IEEE Transactions on Power Systems
This letter proposes a dual model for grid-forming (GFM) controlled converters. The model is inspired from the observation that the structures of the active and reactive power equations of lossy synchronous machine models are almost symmetrical in terms of armature resistance and transient reactance. The proposed device is able to compensate grid power
openaire   +2 more sources

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

Integration of OpenCV‐Based Microscopic Adhesive Volume Measurement Into a Pyiron Workflow for Automated Data Analysis

Advanced Engineering Materials, EarlyView.
Residual adhesive after electrode loading in adhesive‐assisted resistance spot welding is quantified through a traceable experimental‐to‐digital workflow. Chromatic confocal topography provides calibrated surface‐height data, while OpenCV detects the electrode imprint and integrates adhesive height into comparable volume metrics.
Sung‐Min Wi, Jiangdong Zhao
wiley   +1 more source

Grid-forming converters : modelling of a VSM controlled inverter in Dymola

, 2022
LAUREA MAGISTRALEIn Europa, così come in tanti paesi di tutto il mondo, le reti elettriche sono in fase di profonda trasformazione. In futuro la produzione di energia elettrica da fonti tradizionali, centralizzata e basata su grandi generatori sincroni,
Ragazzini, Jacopo Stefano
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