Results 61 to 70 of about 798,059 (294)

RDG System in Remote Areas with Utility or Local Feed Topology and Operation Strategy [PDF]

, 2014
In remote regions with availability of wind energy, a RDG (renewable distributed generation) system is an advantageous alternative to increase the provision of electrical supply.
Battaiotto, Pedro Eduardo, Cendoya, Marcelo Gustavo, Peña, Ricardo Ramiro, Toccaceli, Graciela Mabel   +3 more
core   +2 more sources

Analysis of Persistent Oscillation Mechanism and Low Frequency Coupling Characteristics of Power System From the Perspective of Grid-Connected Converter

IEEE Access, 2021
The voltage disturbance in the weak grid will cause frequency coupling and even persistent oscillation of the grid current of grid connected converter in power system.
Qi Wang, Xingyong Zhao, Peng Wang
doaj   +1 more source

Additive Gaussian Process Regression for Predictive Design of High‐Performance, Printable Silicones

Advanced Engineering Materials, EarlyView.
A chemistry‐aware design framework for tuning printable polydimethylsiloxane (PDMS) for vat photopolymerization (VPP) is developed using additive Gaussian process (GP) modeling. Polymer network mechanics informs variable groupings, feasible formulation constraints, and interaction variables.
Roxana Carbonell, Martha Leach, Hongtao Song, Carolyn Seepersad   +3 more
wiley   +1 more source

A comparative analysis of empirical calibrators for nebular metallicity [PDF]

, 2005
We present a new analysis of the main empirical calibrators of oxygen abundance for ionised gas nebulae. With that aim we have compiled an extensive sample of objects with emission line data including the near IR [SIII] lines and the weak auroral lines ...
Allende-Prieto, Alloin, Angeles I. Díaz, Belley, Castellanos, Castellanos, Christensen, De Robertis, Deharveng, Denicoló, Dennefeld, Dinerstein, Dopita, Díaz, Díaz, Díaz, Edmunds, Enrique Pérez-Montero, French, García Vargas, Garnett, Garnett, Garnett, Garnett, Garnett, González-Delgado, González-Delgado, Guseva, Henry, Holweger, Hoyos, Izotov, Izotov, Izotov, Jensen, Kennicutt, Kennicutt, Kennicutt, Kewley, Kinkel, Kniazev, Kobulnicky, Kobulnicky, Kunth, Kwitter, Lequeux, Lester, Luridiana, McCall, McGaugh, McGaugh, Monteverde, Nollenberg, Oey, Oey, Osterbrock, Pagel, Pagel, Pagel, Pastoriza, Peimbert, Peimbert, Peimbert, Peimbert, Pettini, Pilyugin, Pilyugin, Pilyugin, Popescu, Pérez-Montero, Rayo, Schaerer, Scowen, Shaver, Shaw, Shields, Skillman, Skillman, Skillman, Skillman, Skillman, Stasińska, Storchi-Bergmann, Storchi-Bergmann, Tayal, Terlevich, Urbaneja, Van Zee, Vermeij, Vila-Costas, Vílchez, Vílchez, Vílchez, Zaritsky, Zaritsky   +94 more
core   +3 more sources

Resonant suppression strategy of impedance remodeling for multi-inverter grid-connected system in weak grid

电力工程技术
In weak grid, a multi-inverter grid-connected system may be simultaneously affected by large grid impedance and background harmonics. The interaction between inverter and grid is enhanced by the large grid impedance, resulting in resonance problems ...
ZHANG Shicong, XU Yonghai, TAO Shun, YU Yongyue, ZHANG Zhi   +4 more
doaj   +1 more source

Improved Capacitor Voltage Feedforward for Three-Phase LCL-Type Grid-Connected Converter to Suppress Start-Up Inrush Current

Energies, 2017
Three-phase active damping LCL-type grid-connected converters are usually used in distributed power generation systems. However, serious inrush current will be aroused when the grid-connected converter starts, especially in rectifier mode, if no ...
Shiying Zhou, Xudong Zou, Donghai Zhu, Li Tong, Yong Kang   +4 more
doaj   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

High Frequency Resonance Damping of DFIG based Wind Power System under Weak Network [PDF]

, 2017
When operating in a micro or weak grid which has a relatively large network impedance, the Doubly Fed Induction Generator (DFIG) based wind power generation system is prone to suffer high frequency resonance due to the impedance interaction between DFIG ...
Blaabjerg, Frede, Song, Yipeng, Wang, Xiongfei   +2 more
core   +2 more sources

Enhanced Stability and Power Quality Control of LCL-GCI Under Weak Grid Conditions Using THQVC

IEEE Access
Grid disturbances and weak grid conditions often lead to synchronization instability in LCL- filtered grid-connected inverters (LCL-GCI), causing challenges in maintaining system stability and power quality.
Pratchaya Pathomchaiwat, Bunlung Neammanee, Jirawut Benjanarasut   +2 more
doaj   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source