Results 11 to 20 of about 8,801 (231)
Properties and features of structure formation CuCr-contact alloys in electron beam cladding [PDF]
, 2014 The microstructure and properties of the contact CuCr alloy produced by electron-beam cladding have been investigated. The effect of the electron beam cladding parameters and preheating temperature of the base metal on the structure and the properties of
Dampilon, Bair Vyacheslavovich +2 more
core +2 more sources
Breakdown performance of vacuum circuit breakers using alternative CF3I-CO2 insulation gas mixture [PDF]
, 2016 In this paper, sulphur hexafluoride (SF6) insulated vacuum interrupter circuit breakers have been used to explore replacing SF6 gas with a trifluoroiodomethane and carbon dioxide (CF3I-CO2) gas mixture.
Griffiths, H., Haddad, A., Widger, P.
core +1 more source
On fully superconducting rectifiers and fluxpumps. A review. Part 2: Commutation modes, characteristics and switches [PDF]
, 1981 This paper forms the second part of the review. Full and half wave superconducting transformer rectifiers are analysed. Modes of operation and loss mechanisms are detailed and a comparison between the behaviour of dynamos and rectifiers is presented ...
Kate, H.H.J. ten +1 more
core +2 more sources
CIRED - Open Access Proceedings Journal, 2017 In the last years the progressive increase of distributed and non-programmable energy sources arise the interest in the use of DC for medium-voltage distribution systems. The study focuses on the design considerations of the apparatus required to support the management and protection of these applications.
Lars Liljestrand +4 more
openaire +1 more source
Voltage transient management for Alternating Current trains with vacuum circuit breakers
IET Electrical Systems in Transportation, 2022 Alternating current power supplies and rolling stock with 25 kV (50 or 60 Hz) and 15 kV (16.7 Hz) traction systems do not have the characteristics and behaviour of a typical three‐phase medium‐voltage distribution system. Switching inductive loads with a
Thomas Moore +2 more
doaj +1 more source
Optimisation of commutation circuit parameters for DC vacuum circuit breakers
The Journal of Engineering, 2019 As the environmental problems caused by the consumption of the non-renewable fossil energy are getting increasingly serious, the new energy power generation has received wide attentions.
Deen Yu, Hai Chen, Wei Liu, Xiaoming Liu
doaj +1 more source
Vacuum circuit breaker current-zero phenomena [PDF]
IEEE Transactions on Plasma Science, 2005 Post-arc current phenomena that occur when interrupting high currents with vacuum circuit breakers have been investigated. High resolution measuring equipment has been used to measure both the post-arc current and the arc voltage in the current-zero region. Three examples of frequently observed phenomena are described.
van Lanen, E.P.A. (author) +3 more
openaire +2 more sources
Experimental Study of Visual Corona under Aeronautic Pressure Conditions Using Low-Cost Imaging Sensors. [PDF]
Sensors (Basel), 2020 Visual corona tests have been broadly applied for identifying the critical corona points of diverse high-voltage devices, although other approaches based on partial discharge or radio interference voltage measurements are also widely applied to detect ...
Riba JR +2 more
europepmc +4 more sources
IET Generation, Transmission & Distribution, 2023 The objective of this paper is to determine the transient characteristics and sites of the pre‐breakdown (pre‐BD) in the spark conditioning under power frequency voltage (PFV) in vacuum.
Hui Ma +7 more
doaj +1 more source
Simulation study on modeling of vacuum arc characteristics and anode temperature rise in low-frequency vacuum interruption [PDF]
AIP AdvancesLow-frequency transmission technology has been widely used in medium- and long-distance electricity transmission scenarios such as offshore wind power transmission due to its advantages of low cost and strong ability to pool renewable energy.
Yanting Li +6 more
doaj +1 more source