Results 81 to 90 of about 431,967 (309)

Short-Circuit Protection Circuit With Current Slope-to-Digital Conversion Short-Circuit Detection and Adaptive Soft Turn-Off

IEEE Open Journal of Power Electronics
A short-circuit protection circuit is proposed for power electronic systems employing silicon carbide metal–oxide–semiconductor field-effect transistors.
Seungjik Lee, Jinman Myung, Geonwoo Park, Yoseph Kim, Ockgoo Lee, Ilku Nam   +5 more
doaj   +1 more source

Impact of power flow on the apparent impedance calculated by the distance protection in transmission lines

IET Generation, Transmission & Distribution, 2023
The reach of primary protection zones of transmission lines distance relays is affected when large power flows circulate through the transmission line prior to a short circuit occurrence.
Fonseca Leonardo, Chapi Fernando, Fonseca Antonio, Quilumba Franklin, Pérez‐Yauli Fabian   +4 more
doaj   +1 more source

Application of multiple resistive superconducting fault-current limiters for fast fault detection in highly interconnected distribution systems [PDF]

, 2013
Superconducting fault-current limiters (SFCLs) offer several benefits for electrical distribution systems, especially with increasing distributed generation and the requirements for better network reliability and efficiency.
Blair, Steven Macpherson, Booth, Campbell, Bright, C.G., Burt, Graeme   +3 more
core   +1 more source

Broadband, Flexible, Skin‐Compatible Carbon Dots/Graphene Photodetectors for Wearable Applications

Advanced Functional Materials, EarlyView.
Broadband, flexible photodetectors integrating nitrogen‐rich carbon dots with single‐layer graphene on plastic substrates are demonstrated. A biocompatible chitosan–glycerol electrolyte enables efficient low‐voltage gating and on‐skin operation. The devices exhibit ultraviolet‐to‐near‐infrared response, mechanical robustness under bending, and verified
Nouha Loudhaief, Petr Rozhin, Ilaria Bertuol, Ali Raza, Leonardo Viti, Subhankar Roy, Enrico Cavarzerani, Luca Sbuelz, Matteo Brilli, Andrea Serinolli, Jacopo Nicoletti, Riccardo Piccoli, Sebastián Castilla, Simone Dal Zilio, Enrique Rodríguez‐Castellón, Miriam Serena Vitiello, Maurizio Selva, Flavio Rizzolio, Alvise Perosa, Giovanni Antonio Salvatore, Domenico De Fazio   +20 more
wiley   +1 more source

Relay protection for lines being sleet-melted by the short-circuit method [PDF]

, 1956
"July 20, 1956.""Reprinted from Transactions of the American Institute of Electrical Engineers, vol. 74, December 1955.""Sleet formation on transmission lines was recognized as a serious operating problem as early as 1916 and shortly thereafter methods ...
Hogan, J.C., Pebler, C.G.
core  

Silver Ion‐Mediated [hk1]‐Oriented Sb2Se3 Crystal Growth for Efficient Photoelectrochemical Hydrogen Evolution

Advanced Functional Materials, EarlyView.
Ag+‐mediated hydrothermal crystal engineering promotes preferential [hk1]‐oriented growth of Sb2Se3 via an ultrathin MoOx interlayer, improving crystallinity and suppressing non‐radiative recombination. The optimized Ag+ treatment photocathode delivers 24.7 mA cm−2 at 0 VRHE and improved stability, revealing an ion‐modulated route to high‐performance ...
Ziying Zhang, Zhenbin Wang, Mirjana Dimitrievska, Miloš Baljozović, Yongping Gan, Pardis Adams, Sanghyun Bae, Thomas Moehl, Wenzhe Niu, Xiang jiu Guan, S. David Tilley   +10 more
wiley   +1 more source

Coherent Control of Nitrogen Nuclear Spins via the VB−${\rm V}_B^-$‐Center in Hexagonal Boron Nitride

Advanced Functional Materials, EarlyView.
This study demonstrates coherent control of 15N nuclear spins coupled to VB−${\text{V}}_{\text{B}}^{-}$ centers in isotope‐enriched hexagonal boron nitride. Selective addressing via spin‐state mixing enables Rabi driving, quantum gates, and coherence times exceeding 10 μs$\umu{\rm s}$.
Adalbert Tibiássy, Charlie J. Patrickson, Thomas Poirier, James H. Edgar, Bruno Lopez‐Rodriguez, Viktor Ivády, Isaac J. Luxmoore   +6 more
wiley   +1 more source

Analysis of the Feasibility of Using Hybrid DC Circuit Breakers with Forced Switching for Parallel Connections

Energies
The use of advanced switching technologies, including hybrid and fully semiconductor-based circuit breakers, enables a significant reduction in the prospective short-circuit current. This enhances the level of circuit protection by minimizing thermal and
Łukasz Nowak, Michał Rodak, Piotr Borkowski   +2 more
doaj   +1 more source

Analisis Koordinasi Over Current Relay Dan Recloser Pada Sistem Distribusi 20kv Penyulang Palur12 Menggunakan Etap 12.6 [PDF]

, 2016
Short circuit interruption that often occur at the distribution system 20KV can cause distruption of the distribution of electrical energy to the consumer.
, Umar,ST.MT., Kurniawan Saputro, Azanto
core  

Development and test of resistive superconducting fault current limiter; acting time and its recovery conditions [PDF]

, 2014
Resistive-type of superconducting fault current limiters (RSFCL) have been developed for medium voltage class aiming to operate at 1 MVA power capacity and short time recovery (< 2 s).
Baldan, Carlos A, Guedes, Luciano C, Lamas, Jérika, Ruppert, Ernesto, Shigue, Carlos Y   +4 more
core   +2 more sources