Results 81 to 90 of about 4,470 (248)

Presaturated iron‐core fault current limiters for MVDC power system applications

IET Electric Power Applications, Volume 18, Issue 12, Page 1978-1990, December 2024.
This paper presents design and dynamic performance investigation of a 25 kV full‐scale, modular topology (arranged on the sides of a regular hexagon), medium voltage direct current (MVDC) permanent magnet (PM) biased presaturated fault current limiter (PMFCL).
Ibrahim A. Metwally, Mohamed Eladawy
wiley   +1 more source

A selected ion flow tube study of the reactions of gas-phase cations with PSCl3 [PDF]

, 2004
A selected ion flow tube was used to investigate the positive ion chemistry of thiophosphoryl chloride, PSCl\(_3\). Rate coefficients and ion product branching ratios have been determined at room temperature for reactions with nineteen cations ; H\(_3\)O\
Adams, Andrew D.J Critchley, Bauschlicher, Bogaerts, Boyle, Chris A Mayhew, Chris R Howle, Fairley, Howle, Jarvis, Jarvis, Lias, Matthews, Miller, Ricca, Richard P Tuckett, Smith, Smith, Smyth, Su, Traeger   +20 more
core   +1 more source

Magnetizing Characteristics of Bridge Type Superconducting Fault Current Limiter (SFCL) with Simultaneous Quench Using Flux-Coupling

Energies, 2020
A bridge type superconducting fault current limiter (SFCL) with simultaneous quench using two high-temperature superconducting (HTSC) elements and two coils was fabricated to analyze the fault current limiting characteristics.
Seok-Cheol Ko, Tae-Hee Han, Sung-Hun Lim
doaj   +1 more source

Integrated control scheme for induction generator, fault current limiter, and energy storage in wind farms [PDF]

مجله مدل سازی در مهندسی, 2018
One of main problems of power systems with doubly fed induction generators (DFIG)-based wind farms is their capability of fault ride through (FRT) and output power fluctuations.
Masoud Esmaili, Mostafa Sedighizadeh, Hesam Yarmohammadi   +2 more
doaj   +1 more source

Analysis of Superconducting Fault Current Limiterin DC System with Renewable Energy Sources [PDF]

, 2016
Superconducting fault-current limiters (SFCLs) have been the subject of research and development for many years and offer an attractive solution to the problem of rising fault levels in electrical distribution systems.
Ganesh, C. (C), Naik, B. V. (B), Rayudu, S. S. (S)   +2 more
core  

Impact of key design constraints on fault management strategies for distributed electrical propulsion aircraft [PDF]

, 2017
Electrically driven distributed propulsion has been presented as a possible solution to reduce aircraft noise and emissions, despite increasing global levels of air travel.
Flynn, Marie-Claire, Galloway, Stuart J., Jones, Catherine E., Norman, Patrick J., Rakhra, Puran   +4 more
core   +1 more source

Sources and Sinks of N in Ecosystem Solutions Along the Water Path Through a Tropical Montane Forest in Ecuador Assessed With δ15N Values of Total Dissolved Nitrogen

Journal of Geophysical Research: Biogeosciences, Volume 129, Issue 10, October 2024.
Abstract The globally increasing reactive N richness affects even remote ecosystems such as the tropical montane forests in Ecuador. We tested whether the δ15N values of total dissolved N (TDN), measured directly in solution with a TOC‐IRMS, can be used to help elucidate N sources and sinks along the water path and thus might be suitable for ecosystem ...
Pablo Alvarez, Andre Velescu, Kerstin Pierick, Juergen Homeier, Wolfgang Wilcke   +4 more
wiley   +1 more source

Protection system considerations for DC distributed electrical propulsion systems [PDF]

, 2015
Distributed electrical propulsion for aircraft, also known as turbo-electric distributed propulsion (TeDP), will require a complex electrical power system which can deliver power to multiple propulsor motors from gas turbine driven generators.
Armstrong, M., Bollman, A., Burt, G., Davies, K., Galloway, S., Jones, C. E., Norman, P.   +6 more
core   +1 more source

A modified synchronverter for a weak grid with virtual power circles‐based PQ decoupling scheme

IET Renewable Power Generation, Volume 18, Issue 14, Page 2723-2736, 26 October 2024.
A VSG is essential for ensuring stability of a power systems with high penetration of renewable energies, weak grid. Its control, however, is challenging due to the coupling of the active and reactive power which thus, requires virtual impedance. This article simplifies what type, kind and magnitude of the virtual impedance required to achieve a ...
Daniel Angelo Kisinga, Peter Makolo, Paul Trodden   +2 more
wiley   +1 more source

Isomeric effects in the gas-phase reactions of dichloroethene, C2H2Cl2, with a series of cations [PDF]

, 2006
A study of the reactions of a series of gas-phase cations (NH\(_4^+\), H\(_3\)O\(^+\), SF\(_3^+\), CF\(_3^+\), CF\(^+\), SF5\(^+\), SF\(_2^+\), SF\(^+\), CF\(_2^+\), SF\(_4^+\), O\(_2^+\), Xe\(^+\), N\(_2\)O\(^+\), CO\(_2^+\), Kr\(^+\), CO\(^+\), N\(^+\),
Mayhew, C. A., Mikhailov, Victor A., Parkes, M. A., Tuckett, R. P.   +3 more
core   +1 more source