Results 21 to 30 of about 76,655 (192)

Increasing the energy efficiency of auxiliary machines of AC electric locomotive

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2021
Currently, an asynchronous variable frequency drive based on semiconductor converters is widely used due to the relative simplicity and reliability of the design.
Yu. M. Kulinich   +2 more
doaj   +1 more source

Methods and software for the selection of asynchronous motors, taking into account their technical characteristics in educational design [PDF]

open access: yes, 2019
Представлены подходы к расчёту и его результаты в части построения семейств механических, электромеханических иэнергетических характеристик асинхронных машин продолжительного режима, а такжеих Матлаб-моделей с учётом особенностей представления каталожных
Осичев, Александр Васильевич   +2 more
core   +1 more source

Driving Asynchronous Induction Launchers: Design and Simulation of a Novel Power Conditioner with a Brief Review

open access: yesEnergies, 2022
The design and implementation of an asynchronous coilgun’s structure is relatively simple compared with other types of linear induction launchers.
Feyzullah Gulpinar, Abdulkadir Balikci
doaj   +1 more source

Formalization and Correctness of the PALS Architectural Pattern for Distributed Real-Time Systems [PDF]

open access: yes, 2010
Many Distributed Real-Time Systems (DRTS), such as integrated modular avionics systems and distributed control systems in motor vehicles, are made up of a collection of components communicating asynchronously among themselves and with their environment
Meseguer, Jos??, Olveczky, Peter C.
core   +1 more source

A newly conceived cylinder measuring machine and methods that eliminate the spindle errors [PDF]

open access: yes, 2012
Advanced manufacturing processes require improving dimensional metrology applications to reach a nanometric accuracy level. Such measurements may be carried out using conventional highly accurate roundness measuring machines.
DAMAK, Mohamed   +4 more
core   +5 more sources

Autonomous mode and parallel operation of an asynchronous generator with the electrical network [PDF]

open access: yesE3S Web of Conferences
This article explains that an asynchronous machine, like other electrical machines, can operate as a motor and generator due to the property of reciprocating motion and that an asynchronous generator is not different in design from an induction motor ...
Bekishev A.Y.   +4 more
doaj   +1 more source

Design methodology of the universal test system based on grouping of electric machines

open access: yesОмский научный вестник
To ensure the repair and production of asynchronous machines, the creation and development of unified testing systems is an urgent task. The methodology proposed in the article for designing unified test systems allows using efficient and economical ways
A. V. Bublik   +3 more
doaj   +1 more source

Turn-to-turn fault protection technique for synchronous machines without additional voltage transformers [PDF]

open access: yes, 2017
This paper presents a novel protection technique for the detection of inter-turn faults in synchronous machines. It is based on the calculation of voltage in the stator windings from the usual phases and neutral voltage, typically available in ...
Gyftakis, Konstantinos N.   +2 more
core   +1 more source

Performance evaluation of a transformerless multiphase electric submersible pump system

open access: yesThe Journal of Engineering, 2014
Using of low-voltage variable-frequency drive followed by a step-up transformer is the most preferable way to feed an electrical submersible pump motor. The existence of long feeder between the motor and drive systems usually causes over-voltage problems
Ahmed A. Hakeem   +5 more
doaj   +1 more source

Process-Oriented Collective Operations [PDF]

open access: yes, 2008
Distributing process-oriented programs across a cluster of machines requires careful attention to the effects of network latency. The MPI standard, widely used for cluster computation, defines a number of collective operations: efficient, reusable ...
Bjørndalen, John Markus   +1 more
core   +1 more source

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