Results 61 to 70 of about 259,844 (306)

Distributed ReStart: Non-Conventional Black-Start Resources : RTDS Based Network Energization from Grid Forming Converters: Part 1 [PDF]

, 2021
Following the past two studies submitted as part of Distributed ReStart project tasks between SPEN and Iberdrola Innovation Middle East, this report summarizes preliminary results achieved as part of the third work package of the project, undertaken in ...
Ahmed, Khaled, Avras, Andreas, Egea-Àlvarez, Agusti, Alassi, Abdulrahman, Feng, Zhiwang, Syed, Mazheruddin Hussain   +5 more
core  

Longitudinal Protection of Grid-Forming New Energy Outgoing Lines Based on Composite Sequence Current Characteristics

Zhongguo dianli
The access of grid-forming new energy centralized transmission system has significantly changed the fault characteristics of the grid, and the traditional longitudinal protection is prone to sensitivity reduction or even refusal risk when the ...
Song YUAN, Zhao GE, Jiajie Tang, Jiabao MEI   +3 more
doaj   +1 more source

Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines

Advanced Engineering Materials, EarlyView.
Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl, Daniel Emil Mack, Martin Tandler, Susanne Schrüfer, Robert Vaßen   +4 more
wiley   +1 more source

Convolutional Neural Network for the Classification of the Control Mode of Grid-Connected Power Converters

Energies
With the integration of power converters into the power grid, it becomes crucial for the Transmission System Operator (TSO) to ascertain whether they are operating in Grid Forming or Grid Following modes.
Rabah Ouali, Martin Legry, Jean-Yves Dieulot, Pascal Yim, Xavier Guillaud, Frédéric Colas   +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

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

Advanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan, David Bürger, Gunther Eggeler, Oleg Shchyglo, Ingo Steinbach, Muhammad Adil Ali   +5 more
wiley   +1 more source

Effect of material and process variability on the formability of aluminium alloys [PDF]

, 2011
Automotive parts are increasingly being manufactured to be lighter and stronger to minimise the environmental impact and to improve the crash performance of automobiles.
Roy, Rajat, S. Hazra, D. Williams, Williams, D. K., Hazra, S. K., R. Aylmore, Smith, A., A. Smith, R. Roy, Aylmore, R.   +9 more
core   +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

Impact of grid forming converters on power system frequency stability

, 2021
LAUREA MAGISTRALELa crescita sempre più massiccia, nell’ambito dei sistemi elettrici di potenza, della generazione distribuita e derivante da fonti rinnovabili è correlata a esigenze ambientali e di sostenibilità che il mondo sta attraversando.
SPINOZZI Di SANTE, VEZIO
core  

Comparative Impedance Characteristic Analysis of Grid‐Following and Grid‐Forming Inverters

IET Renewable Power Generation
This paper comprehensively analyses the impedance characteristics of grid‐following (GFL) and grid‐forming (GFM) inverters at around synchronous frequency areas considering various operating and grid connection conditions and control settings.
Yonggang Zhang, Peter Unruh, Boris Fischer, Martin Braun   +3 more
doaj   +1 more source