Results 61 to 70 of about 4,470 (248)

Das Intrarotspektrum von matrixisoliertem SFCI [PDF]

open access: yes, 1984
The new compound SFCl was obtained by UV photolysis of FC(O)SCl in rare gas matrix and by UV photolysis of Cl2/SF3SF in the gas phase. Isotopic substitution verifies the molecular identity.
Willner, H.
core   +2 more sources

High‐Current Cryogenic DC Solid‐State Circuit Breaker for Electric Aircraft

open access: yesIET Electric Power Applications, Volume 19, Issue 1, January/December 2025.
Cryogenic and superconducting technologies have great potential to significantly enhance the power density and efficiency of electric propulsion aircraft. This paper presents the design of a 300 V/1700 A DC solid‐state circuit breaker (SSCB) operating at cryogenic temperatures.
Zhongying Wang   +8 more
wiley   +1 more source

Sfcl Location Selection Considering Reliability Indices

open access: yes, 2010
The fault current levels through the electric devices have a significant impact on failure probability. New fault current results in exceeding the rated capacity of circuit breaker and switching equipments and changes operation characteristic of overcurrent relay. In order to solve these problems, SFCL (Superconducting Fault Current Limiter) has rising
Wook-Won Kim, Sung-Yul Kim, Jin-O Kim
openaire   +1 more source

Experimental Tests of a Resistive SFCL Integrated With a Vacuum Interrupter [PDF]

open access: yesIEEE Transactions on Applied Superconductivity, 2016
A resistive superconducting fault-current limiter (SFCL) has been developed using round magnesium diboride (MgB2) wire. The SFCL coil was wound using an interleaved coil arrangement to minimize the total coil inductance. The SFCL coil demonstrated reliable and repeatable current-limiting properties during testing.
Pei, X., Smith, A. C., Shuttleworth, R.
openaire   +1 more source

Cryogenic DC Circuit Breaker Based on High‐Power Press‐Pack IGBT

open access: yesIET Electric Power Applications, Volume 19, Issue 1, January/December 2025.
This paper presents the performance of cryogenically compatible 3.3 kV/1.5 kA PP‐IGBTs as the main circuit breaker in a hybrid circuit breaker. The 3.3 kV/1.5 kA press‐pack IGBT can interrupt currents exceeding 5.1 kA when immersed in a liquid nitrogen bath. PP‐IGBTs are promising candidates for high‐power circuit breakers in cryogenically cooled power
Zhongying Wang   +9 more
wiley   +1 more source

Architecture, Voltage and Components for a Turboelectric Distributed Propulsion Electric Grid [PDF]

open access: yes, 2015
The development of a wholly superconducting turboelectric distributed propulsion system presents hide unique opportunities for the aerospace industry.
Armstrong, Michael J.   +6 more
core   +3 more sources

A review of the effect of common fault current limiters (FCLs) on power systems reliability

open access: yesThe Journal of Engineering, Volume 2025, Issue 1, January/December 2025.
This article provides a literature review of the effect of FCLs on the reliability of various systems (such as substations and distribution systems) for the first time. It identifies research gaps and challenges in this field. According to identified gaps, it provides suggestions for future works to the researchers.
Zahra Esmaeili, Hossein Heydari
wiley   +1 more source

Appropriate Protection Scheme for DC Grid Based on the Half Bridge Modular Multilevel Converter System

open access: yesEnergies, 2019
The half bridge (HB) modular multilevel converter (MMC) technology is considered a breakthrough to mitigate the shortcomings of the conventional voltage source converter (VSC) in high-voltage direct-current (HVDC) grid application.
Ho-Yun Lee   +4 more
doaj   +1 more source

Development and test of a small resistive fault current limiting device based on Hg, Re-1223 and Sm-123 ceramics [PDF]

open access: yesMaterials Research, 2014
Several reports describing Superconducting Fault Current Limiter (SFCL) containing members of the bismuth or yttrium ceramics were already described. However, none of these included the mercury and samarium cuprates.
Carlos Augusto Cardoso Passos   +10 more
doaj   +1 more source

Complementing ODE-Based System Analysis Using Boolean Networks Derived from an Euler-Like Transformation [PDF]

open access: yes, 2011
In this paper, we present a systematic transition scheme for a large class of ordinary differential equations (ODEs) into Boolean networks. Our transition scheme can be applied to any system of ODEs whose right hand sides can be written as sums and ...
Röblitz, Susanna   +2 more
core   +1 more source

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