Results 21 to 30 of about 5,372 (205)

Detection of Short-Circuited Turns in Secondary Windings of Current Transformers Using Method of Digital Current and Voltage Oscillography While Reading Volt-Ampere Characteristics

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2004
The paper contains processing results of digital current and voltage oscillograms as effective, mean and peak volt-ampere characteristics of a serviceable current transformer with short- circuited turns.
V. Kh. Sapyanik, A. 1. Vlasov, A. A. Hlushonak   +2 more
doaj   +1 more source

Development of an algorithm for identifying single-phase ground fault conditions in cable and overhead lines in the networks with isolated neutral

Energy Reports, 2023
The paper addresses the issue of identification of the type of single-phase ground fault in medium voltage networks operating mainly with an isolated neutral. By analyzing the published research, the most promising methods for detection of a single-phase
Andrey A. Achitaev, Konstantin V. Suslov, Irina O. Volkova, Vyacheslav E. Kozhemyakin, Yuri V. Dvoryansky   +4 more
doaj   +1 more source

A Method of Direct Analog Simulation Using Transistor Switches and its Applications [PDF]

, 1968
In the analog circuits for the systms governed by the dilfercntial equations with the coefficients which are a function of one or mOre of the dependent variables, the magnitudes of their circuit elements must be variable in accordance with the nature of ...
Kato, Osamu, Misaki, Takayoshi, Okamoto, Takuji   +2 more
core   +1 more source

Selkov’s Dynamic System of Fractional Variable Order with Non-Constant Coefficients

Mathematics
This article uses an approach based on the triad model–algorithm–program. The model is a nonlinear dynamic Selkov system with non-constant coefficients and fractional derivatives of the Gerasimov–Caputo type.
Roman Parovik
doaj   +1 more source

Types of aeroelastic vibrations of turbomachinery bladed discs

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2017
A real process was analyzed for presence of self-oscillations. Absence of self-oscillations was revealed as its attributes such as progressive wave and beating were not discovered.
A. O. Koskin, V. G. Seleznev
doaj   +1 more source

EXPERIMENTAL STUDIES OF BRUSHLESS MAGNETOELECTRIC MOTORS OF THE RETURN-ROTARY MOTION

Праці Інституту електродинаміки Національної академії наук України, 2021
The paper describes the structure and mathematical model of a specialized brushless magnetoelectric motor of return-rotary motion. The analysis of the parameters of the mathematical model is carried out and the methods of their ex-perimental ...
V.G. Kireyev, K.P. Akinin, A.A. Filomenko, V.A. Lavrinenko   +3 more
doaj   +1 more source

Thermal blinding of gated detectors in quantum cryptography

, 2010
It has previously been shown that the gated detectors of two commercially available quantum key distribution (QKD) systems are blindable and controllable by an eavesdropper using continuous-wave illumination and short bright trigger pulses, manipulating ...
Bethune, Braunstein, Carlos Wiechers, Chau, Christoffer Wittmann, Cova, Cova, Dominique Elser, Ekert, Fung, Fung, Gisin, Gisin, Gottesman, Gottesman, Hwang, Inamori, Johannes Skaar, Lamas-Linares, Lars Lydersen, Lo, Lo, Lydersen, Lydersen, Makarov, Makarov, Makarov, Makarov, Makarov, Marcikic, Marøy, Nauerth, Peloso, Qi, Ribordy, Ribordy, Scarani, Shor, Stucki, Stucki, Tomita, Vadim Makarov, Vakhitov, Wang, Xu, Yuan, Yuan, Zhao   +47 more
core   +1 more source

On a Ssystem of Coupled Linear Oscillators with Fractional Friction and Non-Constant Coefficients for Describing Geoacoustic Emission

Vestnik KRAUNC: Fiziko-Matematičeskie Nauki
The paper proposes a generalization of the previously obtained mathematical model of geoacoustic emission, according to which the model takes into account the effects of heredity in dissipative terms.
Sergienko, D.F., Parovik, R.I.
doaj   +1 more source

Effects of nonstandard neutrino interactions at PINGU

, 2013
Neutrino oscillation experiments in the past decades have greatly improved our knowledge on neutrinos by measuring the fundamental neutrino parameters. The ongoing and upcoming neutrino oscillation experiments are intended to pin down the neutrino mass ...
Ohlsson, Tommy, Zhang, He, Zhou, Shun
core   +1 more source

Determining single-phase earth fault location with applying short-term double earth fault [PDF]

E3S Web of Conferences, 2019
The single-phase earth faults location are the predominant type of damage in distribution networks of 6-35 kV. The problem of remotely determining the fault location during single-phase earth faults has not definitely accepted practical and accurate ...
Kulikov A.L., Osokin V.Ju., Bezdushniy D.I.   +2 more
doaj   +1 more source