Fault Analysis
Mostrando 1-12 de 110 artigos, teses e dissertações.
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1. Novel Design of a Hybrid Superconducting Fault Current Limiter with Controlled Solid-State Device
Abstract Fault current limiters are essential devices used to protect the power system and its equipment against high levels of fault current, which are growing up due to the increase of new power sources. This paper proposes a novel design of a Hybrid Superconducting Fault Current Limiter (Hybrid SFCL), which is composed basically by thyristors in series wi
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-06
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2. Hydraulic System Onboard Monitoring and Fault Diagnostic in Agricultural Machine
Abstract Agricultural Machinery as an off-road vehicle is the backbone of the World agricultural industry. Its main function is to operate as a prime mover and support the power requirements to function the various type of draft implements. In this regards, the hydraulic system is an important part and is controlled by the propagated oil which is cleaned by
Braz. arch. biol. technol.. Publicado em: 24/10/2019
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3. Risk analysis and reliability of the GERDA Experiment extraction and ventilation plant at Gran Sasso mountain underground laboratory of Italian National Institute for Nuclear Physics
Abstract The aim of this study is the risk analysis evaluation about argon release from the GERDA experiment in the Gran Sasso underground National Laboratories (LNGS) of the Italian National Institute for Nuclear Physics (INFN). The GERDA apparatus, located in Hall A of the LNGS, is a facility with germanium detectors located in a wide tank filled with abou
REM, Int. Eng. J.. Publicado em: 2017-09
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4. CONTROL PROPOSAL FOR A HIGH PURITY COLUMN BASED ON THE SEPARATION OF VARIABLES BY THE INDEPENDENT COMPONENT ANALYSIS METHOD
Abstract Many industries are complex when it comes to operation mode. In order to reduce the problems related to strong coupling in these processes, the search for the incorporation of artificial intelligence devices has shown an increasing trend in recent years. Due to this complexity and control in multivariable processes, diagnosis and fault monitoring in
Braz. J. Chem. Eng.. Publicado em: 2017-01
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5. Slope stability analysis at highway BR-153 using numerical models
Abstract An existing cut slope on Highway RS-471/BR-153 is studied. The slope is composed of the Serra Geral Formation's material: a highly altered volcanic breccia and above it a slightly altered and very fractured rhyolite. A numerical analysis of the slope is carried out in two dimensions. Fracturing of the rhyolite necessitates the use of a constitutive
Rem: Rev. Esc. Minas. Publicado em: 2016-06
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6. An Asynchronous Interface with Robust Control for Globally-Asynchronous Locally-Synchronous Systems
ABSTRACT: Contemporary digital systems must necessarily be based on the "System-on-Chip" (SoC) concept. Especially in relation to the aerospace industry, these systems must overcome some additional engineering challenges concerning reliability, safety and low power. An interesting style for aerospace SoC design is the GALS (Globally Asynchronous, Locally Syn
J. Aerosp. Technol. Manag.. Publicado em: 2013-03
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7. Distributed generators performance during short-circuits considering fault ride-through requirements / Desempenho de geradores distribuídos durante curtos-circuitos considerando requisitos de suportabilidade a afundamentos de tensão = : Distributed generators performance during short-circuits considering fault ride-through requirements
The increase of distributed generation penetration in distribution systems not only helps to diversify the electrical matrix but also brings both technical and economic benefits. Yet, it also raises worries related to energy supply reliability. For wind power plants into the medium and high voltage networks there are the grid codes for "Fault Ride-Through" w
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2012
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8. Análise de estruturas aeronáuticas reforçadas por doublers colados / Analysis of aeronautical structures reinforced by bonded doublers
Na indústria aeronáutica o uso de juntas coladas, rebitadas, parafusadas e soldadas na união de partes estruturais é de extrema importância no projeto das aeronaves. No entanto, devido as suas vantagens, as juntas coladas representam uma das principais tecnologias disponíveis para a exploração de novos materiais e para o desenvolvimento de projetos i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/07/2012
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9. Sistemas inteligentes para monitoramento e diagnósticos de falhas em motores de indução trifásicos / Intelligent systems for faults monitoring and diagnosis in three-phase induction motors
The objective of this thesis consists of the implementation of intelligent systems for three-phase induction motors fault diagnosis and condition monitoring. Therefore, an experimental test stand for stator winding inter-turn short circuit faults, broken rotor bar in squirrel cage and, finally, defective wheel bearing has been designed. The main focus is to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/04/2012
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10. Comparação entre os critérios de diagnósticos por análise cromatográfica de gases dissolvidos em óleo isolante de transformador de potência / Comparison between the diagnostic criteria for chromatographic analysis of gases dissolved in insulating oil for transformer
Existem inúmeras ferramentas e metodologias para o diagnóstico de falhas em transformadores de potência, tanto para a monitoração e acompanhamento do equipamento em operação (planta fixa) como àquele retirado e abrigado em laboratórios de unidades fabris. Em função dos custos envolvidos no transporte dos equipamentos, manuseio para a substituiçã
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/04/2012
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11. Monitoramento on-line e DiagnÃstico Inteligente da Qualidade DielÃtrica do Isolamento LÃquido de Transformadores de PotÃncia / On-line monitoring and intelligent diagnosis of dielectric quality of liquid isolation of power transformers.
O monitoramento e o diagnÃstico de falhas incipientes em transformadores de potÃncia imersos em Ãleo estÃo diretamente relacionados à avaliaÃÃo das condiÃÃes do sistema de isolamento. Neste estudo, estabelece-se o conceito de monitoramento e diagnÃstico, e em seguida tÃcnicas de monitoramento on-line sÃo discutidas. Um sistema de prÃ-diagnÃstic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/03/2012
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12. Detecção e isolação de falhas em unidades de medidas inerciais com redundância mínima de giros de fibra óptica / Fault detection and isolation on inertial measurement units with minimal redundancy of fiber optic gyros
Nesta tese são apresentados os estudos inerentes ao processo de detecção e isolação de falhas (DIF) em unidades de medidas inerciais (UMI) com redundância mínima de girômetros de fibra óptica. Nesses estudos, como elementos acessórios ao atendimento do objetivo principal, foram abordados os modelos para construção e calibração da UMI, além das
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/11/2011