Results 41 to 50 of about 281,992 (265)

A grid-connected switched PV array

IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society, 2015
In this paper, a grid-connected version of the switched PV array will be presented. The PV array consists of n parallel-connected strings and m series-connected modules per string, i.e. an array with a dimension of (m × n). Using the proposed switched PV approach, each string can be reconfigured to form two parallel strings of m/2 modules per string ...
Ahmed A. Elserougi, Ayman S. Abdel-Khalik, Ahmed M. Massoud, Shehab Ahmed   +3 more
openaire   +2 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

A novel phase estimation method for renewable energy grid-connected equipments

Energy Reports, 2022
When renewable energy is applied to the power grid, it will cause problems such as harmonic interference and changes in grid frequency, resulting in harmonic distortion of the inverter and other renewable energy grid-connected equipments output current ...
Nanmu Hui, Xiaowei Han, Baoju Wu
doaj   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Active frequency support control strategy for grid-forming direct-drive wind turbines

电力工程技术
A high proportion of wind power generation is integrated into the grid through power electronic devices，which lack the inertial response of traditional synchronous generators.
Zunzhu LIU, Zhijiang CHENG, Weiqing WANG, Beiduo SONG   +3 more
doaj   +1 more source

Control strategy of transition between grid-connected and island operation of flexible DC system

Zhejiang dianli, 2023
The flexible DC transmission system is connected to the island grid， so the control mode needs to be changed according to the AC topology. In the process of grid-connected and island operation conversion， there are phenomena such as excessive disturbance，
WANG Ke, ZHU Haiyong, LIU Li, LU Yu, DONG Yunlong, ZOU Qiang   +5 more
doaj   +1 more source

Grid Connected Photovoltaic System, for a 800 W

Energy Procedia, 2015
AbstractThe purpose of this work is on analyzing large, grid connected with three-phase inverter system, which presents the three-phases grid-connected inverter designed for a 800W photovoltaic system. These PV systems are interfaced to the grid invariably by a power electronic DC-DC converter and inverter.
Bouhafs, Ali, Lokmane, Bendaas Mohamed, Mohamed, Djarallah   +2 more
openaire   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

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