Results 71 to 80 of about 1,951 (227)
Cryogenic DC Circuit Breaker Based on High‐Power Press‐Pack IGBT
IET 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
Efek Aditif Bi2o3 Terhadap Mikrostruktur Dan Koefisien Non Linear Varistor Zno. [PDF]
, 2012 The varistor ZnO has been made by using raw materials: ZnO (E-Merck) and additive 0 %, 2.5 %, 5%, 7.5%, and 10% wt. Bi2O3. The important property of varistor ZnO is coefficient of non linier () and it can give influence correlation between current I and ...
Malik, U. (Usman) +1 more
core
Large dopant dependence of the current limiting properties of intrinsic conducting polymer surge protection devices [PDF]
, 2016 New two terminal surge protection devices based on intrinsic conducting polymers are demonstrated to be strongly affected by the dopant molecule type. Thermogravimetric analysis combined with current–voltage studies show a causal link between the dopant ...
Gee, Alex +6 more
core +1 more source
Ageing Behaviours and Mechanisms of SiC MOSFET and Si IGBT in DC Solid‐State Circuit Breaker
IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.We propose that this distributed thermal profile in IGBT mitigates localised stress. Conversely, the high concentration of thermal stress in SiC MOSFET's gate region leads to its severe ageing. ABSTRACT The rapid development of DC power systems in applications such as electric aircraft and microgrids has highlighted the need for high‐performance DC ...
Jiajia Song, Bo Zhang, Yanfeng Song
wiley +1 more source
Preparation of nitrogen doped zinc oxide nanoparticles and thin films by colloidal route and low temperature nitridation process [PDF]
, 2016 International audienceNitrogen doped zinc oxide (ZnO) nanoparticles have been synthesized using a colloidal route and low temperature nitridation process.
Cario, Laurent +8 more
core +4 more sources
IET Electrical Systems in Transportation, Volume 2025, Issue 1, 2025.Decarbonizing rail transport in response to global warming is fundamental to achieving a net zero transportation system. Along with increased passenger mobility and network electrification initiatives, significant connectivity between the train and infrastructure is needed to underpin operational communications and safety, information exchange, and ...
Yljon Seferi +3 more
wiley +1 more source
Analysis of Surge Propagation with Lightning Arrester using FDTD for 25 kV-AC Transmission Line [PDF]
, 2017 This paper analyzes lightning surge propagation and reflection as the surge arrives at a lightning arrester. Telegraphist equations have been used to characterize the voltage and current of a travelling wave in a lossless power transmission line and ...
Aodsup, K. (Kokiat) +1 more
core
IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.In this method, by increasing the degrees of freedom of the unbalanced IEEE 906 bus low‐voltage reference network through load transfer switches, the optimal network configuration is proposed using a meta‐heuristic algorithm to solve this constrained large‐scale optimization problem for the purpose of electrical losses reduction.
Pooya Najafi Zanjani +3 more
wiley +1 more source
Back Flash Overvoltage Damages All DC/AC Converters in Photovoltaic Systems
IEEE AccessThis research addresses real faults in photovoltaic (PV) systems in Cuba, as these faults result in damage to all converters, whether in operation or not, when atmospheric discharge strikes nearby.
Osmel Perez Baluja +4 more
doaj +1 more source
Reliability evaluation of metal oxide varistors for maintenance scheduling [PDF]
WIT Transactions on Ecology and the Environment, Vol 91, 2006 Surge overvoltages result in a power system from overcurrents due to atmospheric discharges, induction phenomena, switch operations or faults. In order to reduce the probability of injuries to people and of failure of electrical and electronic systems, power systems within a structure should have adequate equipotential bonding. Surge protective devices
Amicucci, G. L., Gentile, P.
openaire +2 more sources