Results 81 to 90 of about 1,361,221 (313)

Universal Grid-Forming Method for Future Power Systems

open access: yesIEEE Access, 2022
Power system inertia typically refers to the energy stored in large rotating synchronous generators. Dynamics and stability of the traditional power system is closely linked to the natural inertia of these synchronous generators. In recent years, increasing amount of synchronous generators have been replaced by high amount of different type of inverter-
openaire   +4 more sources

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

open access: yesAdvanced 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

Grid Forming Inverter Power Control Stability Analysis

open access: yesIEEE Access
Stable system operation is being actively attempted by introducing grid-forming inverters (GFMs) which mimic synchronous generators (SGs). Although the introduction of GFMs intended to replace traditional grid-following inverters (GFLs) provides system ...
Junsu Park, Soseul Jeong, Minhan Yoon
doaj   +1 more source

Grid forming offshore wind farms

open access: yes, 2021
This presentation was part of the SP5 & SP6 WEBINAR on Grid solutions to realize 450 GW of offshore wind capacity by 2050.
Torsten Lund   +2 more
openaire   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

open access: yesAdvanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies   +2 more
wiley   +1 more source

GRID‐FORMING CAPABILITIES OF HVDC CONVERTERS

open access: yes, 2021
This presentation was part of the SP5 & SP6 WEBINAR on Grid solutions to realize 450 GW of offshore wind capacity by 2050.
Suul, Jon Are, D'Arco, Salvatore
openaire   +1 more source

Robust Spot Melting by 3D Spot Arrangements in Electron Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
This work proposes an approach to replace separately melted contours for spot melting in electron beam powder fusion. Adapting the spot arrangements close to the contour combined with stacking yields a comparable surface quality without the inherent challenges of separate contours, as demonstrated, by electron optical images and roughness measurements.
Tobias Kupfer   +4 more
wiley   +1 more source

Comparison between incremental deformation theory and flow rule to simulate sheet-metal forming processes [PDF]

open access: yes, 2012
Numerical simulation of the deep drawing process for the manufacture of aeronautical or automotive components should predict with good accuracy the behaviour during the forming operation, taking into account, the material and the process parameters ...
BATOZ, Jean-Louis   +3 more
core  

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

open access: yes, 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
core  

Grid-Forming Fuel Cell System for an Islanded AC Grid

open access: yesEletrônica de Potência
This paper proposes a two-stage converter that can black start an isolated AC Microgrid with a Fuel Cell (FC) as the primary energy source. The first stage is connected to the FC and employs a Three-Leg Interleaved Boost DC/DC Converter (IBC), while the
João M. T. do Amaral   +5 more
doaj   +1 more source

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