Results 81 to 90 of about 13,412,516 (344)

Advanced Testing Chain Supporting the Validation of Smart Grid Systems and Technologies

open access: yes, 2018
New testing and development procedures and methods are needed to address topics like power system stability, operation and control in the context of grid integration of rapidly developing smart grid technologies.
Brandl, Ron   +7 more
core   +1 more source

Thermoreflectance Detection of Point Defects Resulting from Focused Ion Beam Milling

open access: yesAdvanced Engineering Materials, EarlyView.
Focused ion beam (FIB) milling is a common tool for nanoscale material processing, however irradiation damage, redeposition, and contamination can occur. We use several characterization tools to show FIB‐induced effects beyond 1 mm from the milled area.
Thomas W. Pfeifer   +3 more
wiley   +1 more source

Enhanced dynamic support strategies of grid-forming-PMSG based on DC-voltagesynchronization: Frequency and Q support perspective

open access: yesInternational Journal of Electrical Power & Energy Systems
The DC-Voltage Synchronization based Grid-Forming PMSG has voltage source characteristics, e.g. frequency and reactive power support function, however, the support capability is limited, and the regulation potential is not fully utilized.
Dejian Yang   +6 more
doaj   +1 more source

Stability enhancement strategies for a 100% grid‐forming and grid‐following converter‐based Irish power system

open access: yesIET Renewable Power Generation, 2022
With increasing shares of wind and/or solar power in many power systems, the possibility of a 100% power converter‐based system becomes more likely. Consequently, the dynamic response of the Irish transmission systems with 100% (grid‐following and grid ...
Xianxian Zhao, Damian Flynn
doaj   +1 more source

Supramolecular Rhombic Grids Formed from Bimolecular Building Blocks [PDF]

open access: yesJournal of the American Chemical Society, 2009
A programmed assembly process produces rhombic grid networks from compounds L1-L4 in the crystal by pi-pi stacking interactions that generate a bimolecular grid synthon, which undergoes further NH...N hydrogen-bond-mediated assembly.
She, N.F.   +6 more
openaire   +2 more sources

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

open access: yesAdvanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt   +8 more
wiley   +1 more source

AC-Side Impedance-Based Stability Assessment in Grid-Forming Modular Multilevel Converters

open access: yesIEEE Access
Grid-forming converters can emulate the behavior of a synchronous generator through frequency droop control. The stability of grid-forming modular multilevel converters can be studied via the impedance-based stability criterion. This paper presents an ac-
Mehrdad Nahalparvari   +3 more
doaj   +1 more source

Three-phase primary control for unbalance sharing between distributed generation units in a microgrid [PDF]

open access: yes, 2013
For islanded microgrids, droop-based control concepts have been developed both in single and three-phase variants. The three-phase controllers often assume a balanced network, hence, unbalance sharing and/or mitigation remains a challenging issue ...
De Kooning, Jeroen   +3 more
core   +3 more sources

Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai   +2 more
wiley   +1 more source

Immunity of Grid-Forming Control Without Energy Storage to Transient Changes of Grid Frequency and Phase

open access: yesIEEE Open Journal of the Industrial Electronics Society
European grid operators in ENTSO-E and others with a significant amount of inverter-based generation are experiencing a reduction in system inertia and short-circuit power.
Norbert R. Klaes, Jens Fortmann
doaj   +1 more source

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