Russian Electrical Engineering
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An Algorithm for Monitoring the Transient Resistance of a Prefabricated Conductive Rail Joint
Russian Electrical Engineering - Tập 94 - Trang 742-747 - 2023
A prefabricated conductive rail joint (PCRJ) is one of the least reliable elements of a rail line. Despite the digital transformation of railway transport, one of the directions of which is the automation of monitoring the technical condition of systems and infrastructure facilities, technical diagnostics of railway transport systems are carried out by operational personnel of infrastructure dista...... hiện toàn bộ
Developing a combined method for analysis of electric machines
Russian Electrical Engineering - Tập 78 - Trang 395-402 - 2007
A combined method for the simulation of magnetic fields, characteristics, and processes in electric machines (EMs) is developed that is based on a new type of equivalent electromagnetic circuit. The new method combines calculations of the magnetic fields in local zones of an EM with numerical simulation of the discrete structure of that EM. An approach to the simulation of the 3D magnetic field of...... hiện toàn bộ
Features of Operation of Induction Motors with a Combined Winding in a Frequency-Controlled Electric Drive
Russian Electrical Engineering - - 2024
An increase in losses and electromagnetic noise of induction motors and wave overvoltages when a motor is operating from a frequency converter with pulse-width modulation of voltage due to higher temporary harmonics of voltage and current to a certain extent can be compensated by the use of combined windings, which reduce differential dissipation and inductive reactance, weakening of wave overvolt...... hiện toàn bộ
Artificial Initiation of Lightning in Thunderclouds by Model Hydrometeor Groups
Russian Electrical Engineering - Tập 89 - Trang 484-489 - 2018
Basic provisions of the scientific and engineering fundamentals of the methods of an artificial initiation of the downward lightning and intracloud lightning by the model hydrometeor arrays have been formulated. The key role played by the model hydrometeor size and form on the probability of an artificial initiation of the downward lightning and intracloud lightning has been established. Volume hy...... hiện toàn bộ
Features that provide fault tolerance of self-synchronizing circuits
Russian Electrical Engineering - Tập 85 - Trang 677-682 - 2015
To use the full potential of self-synchronized circuits (SSCs), which are often presented as being highly reliable, special methods for increasing reliability and providing fault tolerance need to be developed. They should make effective use of all the possibilities of a self-synchronized circuit structure. self-synchronized digital devices will then become a good choice in critical areas such as ...... hiện toàn bộ
Control of an Active Voltage Rectifier in a Generation System Based on a Synchronous Generator with Combined Excitation at a Variable Frequency of Rotation of the Generator Shaft
Russian Electrical Engineering - Tập 94 - Trang 19-23 - 2023
This paper describes a method for controlling an active voltage rectifier, which combines regulation of the dc output voltage and parametric regulation of the phase of the control signal at a given modulation depth with zero reactive current. Such control is possible in power-supply systems based on a synchronous generator with combined excitation and an active voltage rectifier at a variable spee...... hiện toàn bộ
Expansion of set of power efficiency factors of power electronics installations
Russian Electrical Engineering - Tập 82 - Trang 332-336 - 2011
Based on the author’s direct calculation methods of power-producing processes, new quality indicators of nonsinusoidal voltages and currents in the form of integral and differential coefficients of harmonics of voltage and current have been obtained. The advisability of introducing them into the standards for the quality of the power network voltage and the consumption current, as well as also int...... hiện toàn bộ
Reduction of network power losses in a four-wire AC network by balancing network phase flows with an active filter
Russian Electrical Engineering - Tập 83 - Trang 365-372 - 2012
Reduction of the load component of network power losses in a four-wire network of an alternating voltage achieved by means of ideal and real (with the help of an active filter and a device for compensating the neutral terminal current) balancing of network phase currents.
A numerical study of the efficiency of a cylindrical electromagnetic shield
Russian Electrical Engineering - Tập 88 - Trang 728-731 - 2018
Electromagnetic shields are widely used for protecting electrical equipment and cable lines from the influence of natural and artificial electric and magnetic fields. A 3D mathematical model of a solid cylindrical shield for protection from the effect of an alternating electromagnetic field produced inside a cable has been proposed. The model has been constructed using the finite-element method in...... hiện toàn bộ
On the methods for constructing failure models of complex systems
Russian Electrical Engineering - Tập 82 Số 11 - Trang 623-627 - 2011
The basic models are discussed for estimation of the failure models of composite systems that can be put at the basis of complex analysis of the state of electrotechnical networks.
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