Results 31 to 40 of about 76,655 (192)

Base system development results of virtual electric-machine laboratory [PDF]

open access: yes, 2007
Electric-machine virtual laboratory base system is the set of virtual laboratories where fundamental experiments with all base types of electric machines (transformers, direct current electric machines and asynchronous alternative current machines) could
Maistrenko, A.   +3 more
core  

Some undecidability results for asynchronous transducers and the Brin-Thompson group 2V [PDF]

open access: yes, 2014
Using a result of Kari and Ollinger, we prove that the torsion problem for elements of the Brin-Thompson group 2V is undecidable. As a result, we show that there does not exist an algorithm to determine whether an element of the rational group R of ...
Belk, James, Bleak, Collin
core   +1 more source

Parallelizing non-vectorizable loops for MIMD machines [PDF]

open access: yes, 1990
Parallelizing a loop for MIMD machines can be described as a process of partitioning it into a number of relatively independent subloops. Previous approaches to partitioning non-vectorizable loops were mainly based on iteration pipelining which ...
Kim, Ki-chang, Nicolau, Alexandru
core  

Asynchronous Distributed Automata: A Characterization of the Modal Mu-Fragment [PDF]

open access: yes, 2017
We establish the equivalence between a class of asynchronous distributed automata and a small fragment of least fixpoint logic, when restricted to finite directed graphs.
Reiter, Fabian
core   +2 more sources

Computational Aspects of Asynchronous CA [PDF]

open access: yes, 2011
This work studies some aspects of the computational power of fully asynchronous cellular automata (ACA). We deal with some notions of simulation between ACA and Turing Machines.
Chandesris, Jérôme   +3 more
core  

Analysis of magnetic field distribution in induction machine with combined star-delta stator winding

open access: yesThe Journal of Engineering, 2019
An induction machine with combined star-delta stator winding is analysed by means of numerical simulations based on lump parameter and finite element method (FEM) models.
M Chomat   +3 more
doaj   +1 more source

Application of unified microprocessor relay protection units in electrical machine diagnostics

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2020
The article concentrates on the topical issue connected with the detection of defects in the rotor winding of electric machines. The experimental sampling and digital processing of electrical signals from controlled windings is in the basis.
V. I. Polishchuk   +3 more
doaj   +1 more source

Large direct drive generators: the induction machine as an alternative to permanent magnet machines

open access: yesThe Journal of Engineering, 2019
Design of direct drive power take off in renewable energy generators tends to focus on force density, naturally leading to the use of relatively expensive permanent magnet machines.
Nick J. Baker, Liam A. Naugher
doaj   +1 more source

Control with Sliding Mode of a Five-Phase Series-Connected Two-asynchronous Motor Drive

open access: yesInternational Journal of Energetica, 2018
In this paper, we study sliding mode control of series-connected five-phase two asynchronous machines supplied with a three levels inverter. After presentation of multiphase machines, we worked out the mathematical model of five phase asynchronous ...
Omar Zouaid, Lazhari Nezli
doaj  

Pumped energy storage system technology and its AC–DC interface topology, modelling and control analysis: a review

open access: yesThe Journal of Engineering, 2019
Pumped-storage hydropower plants can contribute to a better integration of intermittent renewable energy and to balance generation and demand in real time by providing rapid response generation. The utilisation of variable-speed pump-turbine units with a
Girmaw Teshager Bitew   +6 more
doaj   +1 more source

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