Results 131 to 140 of about 4,554 (306)

Design Of Stabilizers For Static Var Compensators [PDF]

, 1990
Steady-state stability of power systems has long been one of the major concerns for all electric utilities. Power system stabilizers (PSS) are frequently employed for adding system damping. However, in an interconnected power system, the most effective generator for deploying a PSS may lie outside the control of the utility or PSS may not be available ...
openaire  

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

Advanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite, Lilia Huynh, Natascha Gray, Quintin N. Meier, Marta D. Rossell, Morgan Trassin   +5 more
wiley   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source

Improving the Operation of Transmission Systems Based on Static Var Compensator

Electricity
This study evaluates and compares centralized and distributed reactive power compensation strategies using Static Var Compensators (SVCs) to enhance the performance of a high-voltage transmission system in the Caribbean region of Colombia.
Kelly M. Berdugo Sarmiento, Jorge Iván Silva-Ortega, Vladimir Sousa Santos, John E. Candelo-Becerra, Fredy E. Hoyos   +4 more
doaj   +1 more source

BE 400/18 kV Substation Renovation Project [PDF]

, 2001
The 400/18 kV SPS main substation was designed for the 400 GeV SPS project and was commissioned in 1974. It has been upgraded several times to form the present 400/66/18 kV SPS and LEP transmission power comprising 490 MVA and 240 MVAR installed power ...
Delidais, M, Vairo, Antonio
core  

Magnetic Force Microscopy Signatures of Higher‐Order Skyrmions and Antiskyrmions

Advanced Functional Materials, EarlyView.
Magnetic force microscopy operated under vacuum conditions enables the qualitative identification of higher‐order skyrmions and antiskyrmions in Co/Ni multilayers at room temperature. Distinct stray‐field contrast signatures arise from vertical Bloch lines and complex domain‐wall configurations.
Sabri Koraltan, Joe Sunny, Tamer Karaman, Reshma Peremadathil‐Pradeep, Emily Darwin, Felix Büttner, Dieter Suess, Hans Josef Hug, Manfred Albrecht   +8 more
wiley   +1 more source

Design and Implementation of an Online Efficiency-Optimized Multi-Functional Compensator for Wind Turbine Generators. [PDF]

Micromachines (Basel), 2023
Ma CT, Zhou FW.
europepmc   +1 more source

Imaging of Biphoton States: Fundamentals and Applications

Advanced Functional Materials, EarlyView.
Quantum states of two photons exhibit a rich polarization and spatial structure, which provides a fundamental resource of strongly correlated and entangled states. This review analyzes the physics of these intriguing properties and explores the various techniques and technologies available to measure them, including the state of the art of their ...
Alessio D'Errico, Ebrahim Karimi
wiley   +1 more source

Scalable Polyelectrolyte Complex‐Based Sorbent With Hourly Sorption−Desorption Cycles for Multicyclic Atmospheric Water Harvesting in Arid Environments

Advanced Functional Materials, EarlyView.
A polyelectrolyte complex‐based sorbent is produced by scalable, environmentally benign aqueous phase inversion. Its porous, LiCl‐ and GO‐integrated architecture enables hourly adsorption−desorption cycles at low relative humidity (RH < 30%). A large‐scale prototype achieves multicyclic, solar‐driven atmospheric water harvesting of 1.37 L kg−1 day−1 ...
Seung‐Hwan Oh, Incheol Heo, Won Cheol Yoo, Soo‐Hyung Choi   +3 more
wiley   +1 more source

Grid-Frequency-Independent Static Var Compensator Control Using a Synchronous Phase-Carrier with Direct Firing Instant Determination for Leading Load Compensation in Renewable Energy DC Bus

Energies
Static var compensators (SVCs) employing thyristor-controlled reactors (TCRs) are widely used to mitigate power-factor degradation by absorbing lagging reactive power.
Jongho Lim, Hyunjae Lee, Sungyong Son, Jingeun Shon   +3 more
doaj   +1 more source