Results 21 to 30 of about 1,555 (283)

Application of the computing environment maple To the calculation of the dynamics of the electromagnets in the complicated systems of forced control [PDF]

, 2019
The authors propose a technique for calculating the dynamics of electromagnets operating in complex forced systems. Such forced electromagnets are widely used in electromechanical switching devices, in particular in vacuum contactors, to reduce their ...
Baida, Evgeniy Ivanovich, Clemens, M., Klymenko, Boris Vladimirovich, Korol, Elena Gennadyevna, Pustovoitov, P.Ye.   +4 more
core   +1 more source

Optical Diagnostics of Anode Surface Temperature in Vacuum Interrupters with Different CuCr Compositions [PDF]

, 2023
The requirements for contact material in vacuum interrupters are demanding because the arc medium is formed by electrode evaporation during the operation. Copper chromium alloy (CuCr) is widely used as contact material.
Dorraki, Naghme, Gortschakow, Sergey, Methling, Ralf   +2 more
core   +2 more sources

Влияние технологических параметров электронно-лучевой наплавки на структуру медно-хромовых композитов [PDF]

, 1998
Работа посвящена влиянию температуры подогрева основного металла и его температуры после окончания процесса электронно-лучевой наплавки композиционной смесью порошков Cu-Cr на структурно-фазовое состояние покрытия.
Гнюсов, Сергей Фёдорович, Дампилон, Баир Вячеславович, Дехонова, Светлана Зиновьевна, Дураков, В. Г.   +3 more
core   +1 more source

Experimental results from a Thomson-coil actuator for a vacuum interrupter in an HVDC breaker

The Journal of Engineering, 2019
Recent developments in high-voltage direct current transmission technology and the plans for multi-terminals motivate research efforts on the fast DC breaker.
Antoine Baudoin, Bence Hátsági, Miguel Álvarez, Lennart Ängquist, Simon Nee, Staffan Norrga, Tomas Modeer   +6 more
doaj   +1 more source

Improved micro-contact resistance model that considers material deformation, electron transport and thin film characteristics [PDF]

, 2009
This paper reports on an improved analytic model forpredicting micro-contact resistance needed for designing microelectro-mechanical systems (MEMS) switches. The originalmodel had two primary considerations: 1) contact materialdeformation (i.e.
Coutu, Ronald A., McBride, John W., Starman, LaVern A.   +2 more
core   +1 more source

Analysis and Research of the Electric Field in the Vacuum Arc Interrupter of a 31.5 kV Vacuum Circuit Breaker

Energies
The insulation performance of vacuum arc interrupters greatly affects the reliability of vacuum circuit breakers. Optimizing the electric field distribution of a vacuum arc interrupter can improve its insulation performance.
Naming Zhang, Siying Yang, Yuan Feng, Zechen Bai, Shuhong Wang, Shuya Ning   +5 more
doaj   +1 more source

Imaging the surface of Altair and a MIRC update [PDF]

, 2008
We report the first scientific results from the Michigan Infrared Combiner (MIRC), including the first resolved image of a main-sequence star besides the Sun.
Berger, D., Berger, J.-P., Blum, J., Ireland, M., McAlister, H., Millan-Gabet, R., Monnier, John D., Muirhead, P., Pedretti, E., Ridgway, S., Sturmann, J., Sturmann, L., Tannirkulam, A., ten Brummelaar, T., Thureau, N., Turner, N., van Belle, G., Zhao, M.   +17 more
core   +1 more source

Breakdown Charge Dependence of Counter Electrode Material Adhesion and Dielectric Strength After Spark Conditioning in Vacuum [PDF]

, 2023
Spark conditioning is an effective method of increasing the dielectric strength in vacuum. In this article, we discuss the breakdown (BD) charge dependence of counter electrode material adhesion and dielectric strength after spark conditioning.
Fukuda, Hideaki, Hayakawa, Naoki, Kita, Naoki, Kojima, Hiroki, Nagatake, Kazuhiro, Yamamura, Kenta   +5 more
core   +1 more source

Statistics of vacuum breakdown in the high-gradient and low rate regime [PDF]

, 2017
Peer ...
Calatroni, Sergio, Degiovanni, Alberto, Djurabekova, Flyura, Giner-Navarro, Jorge, Korsbäck, Anders, Rajamäki, Robin, Wuensch, Walter   +6 more
core   +2 more sources

Improving interruption performance of mechanical circuit breakers by controlling pre-current-zero wave shape

High Voltage, 2019
Mechanical circuit breakers (MCBs) are the limiting component for current injection HVDC circuit breakers. Improving their interruption performance reduces requirements for capacitance and inductance needed in the injection circuit and thus space use and
Tim Schultz, Benjamin Hammerich, Benjamin Hammerich, Lorenz Bort, Christian M. Franck, Christian M. Franck   +5 more
doaj   +1 more source