Results 51 to 60 of about 692,988 (193)

Critical Review of Flywheel Energy Storage System

open access: yesEnergies, 2021
This review presents a detailed summary of the latest technologies used in flywheel energy storage systems (FESS). This paper covers the types of technologies and systems employed within FESS, the range of materials used in the production of FESS, and ...
Abdul Ghani Olabi   +3 more
doaj   +1 more source

Synchronous machines parameters identification using load rejection test data

open access: yes, 1997
This work shows a computational methodology for the determination of synchronous machines parameters using load rejection test data. The quadrature axis parameters are obtained with a rejection under an arbitrary reference, reducing the present ...
da Costa Bortoni, Edson   +3 more
core   +1 more source

Contribuição à determinação das reatâncias não saturadas de máquinas síncronas de polos lisos laminados [PDF]

open access: yes, 2013
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2013.Apresenta-se nessa dissertação um estudo das reatâncias não saturadas de máquinas síncronas de ...
Mendonça, Aline Jorge
core  

Synchronized rotor angle measurement of synchronous machines [PDF]

open access: yes2012 IEEE Industry Applications Society Annual Meeting, 2012
A key input parameter to governor feedback control and stability protection of generators is the angle of the induced voltage internal to the generator. Current practice is to estimate this value using measurements from the terminals of the generator and mathematical models. This project aims to develop a system that would directly measure the internal
Jaime De La Ree, David C. Mazur
openaire   +2 more sources

Desenvolvimento de um sistema de detecção e avaliação de faltas em geradores síncronos por meio do campo magnético externo [PDF]

open access: yes, 2014
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2014.Esta tese apresenta o desenvolvido de um equipamento e de uma metodologia para detecção e análise de ...
Rigoni, Mauricio
core  

Continuous Evolution and Modern Approaches of Excitation Systems for Synchronous Machines

open access: yes, 2018
Field-wound synchronous machines represent the majority of large power generating units and special high-power motor solutions, because they offer high efficiency, flexible field excitation and deep flux weakening capability.
Alves, Erick Fernando,   +5 more
core   +1 more source

Design and optimisation of a coreless superconducting synchronous generator

open access: yes, 2010
Constantly increasing demand for electrical power requires more efficient and more powerful machines to be built. The conventional technology cannot provide such machines.
Lukasik, Bartosz
core   +1 more source

Vectorial Formalism of Polyphase Synchronous Machine With Permanents Magnets

open access: yesAceh International Journal of Science and Technology, 2013
- This paper presents a mathematical model that transforms the real machine to fictitious machines and our goal is to simulate these and see the behavior of these machines in load.
Abdelkrim Sellam   +6 more
doaj   +3 more sources

Reducing Rare-Earth Magnet Reliance in Modern Traction Electric Machines

open access: yesEnergies
Currently, electric machines predominantly rely on costly rare-earth NdFeB magnets, which pose both economic and environmental challenges due to rising demand.
Oliver Mitchell Lee   +1 more
doaj   +1 more source

Losses, Efficiency and Thermal Behavior of the Synchronous Motors with Different PM Materials

open access: yesCommunications, 2013
The paper deals with losses, efficiency and thermal behavior of the synchronous machines with different permanent magnet (PM) materials. Three PMSM are presented in this paper: First, the PMSM with NdFeB PM, which is really constructed. Second, the NdFeB
Peter Sekerak   +4 more
doaj   +1 more source

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