Documentação de convênios

URI permanente desta comunidadehttps://rigalileo.itegam.org.br/handle/123456789/173

Trabalhos ténico-científico oriundos de convênios com universidades para oferta de turmas de mestrado e doutorados no Estado do Amazonas

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2010 - 20123

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Assunto: search.filters.subject.Harmônicas

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Agora exibindo 1 - 3 de 3
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    Aplicação de Filtro Harmônico em Sistemas Elétricos de Baixa Tensão Utilizando Lógica Fuzzy
    (Universidade Federal do Pará, 2010) CIRINO, Weverson dos Santos; COSTA JUNIOR, Carlos Tavares da
    This work presents a solution to minimize harmonic distortion in low-voltage electrical systems through the application of passive harmonic filters and the use of fuzzy logic. The proposed algorithm detects and calculates the frequencies at which the Total Harmonic Distortion (THD) value is elevated, comparing it with a normative index. Once the need for filter application is identified, the algorithm designs the passive filter, chosen for its ease of installation and low cost. The algorithm also recalculates the THD after filter application, using fuzzy logic to classify the final result.
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    Os Impactos na Qualidade da Energia Elétrica Oriundos das Lâmpadas Fluorescentes Compactas Instaladas no Programa Luz para Todos
    (Universidade Federal do Pará, 2012) NEVES, Cleonor Crescêncio das; COSTA JUNIOR, Carlos Tavares da
    The Brazilian Federal Program "Luz para Todos" provides for the installation of 15W compact fluorescent lamps (CFLs) in rural households and underserved communities. This work evaluates the impact on power quality caused by the injection of harmonics generated by these lamps. Measurements of Total Harmonic Distortion (THD) were performed using an AC power source and a power quality analyzer. The results show that CFLs introduce significant distortions in the current, with THD up to 121.2%, which can compromise the quality of power supplied by distribution systems. The study also simulates the impact on a real distribution system of the utility CELPA, highlighting the need to review planning and sizing methodologies for electrical systems to address these disturbances.
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    OS IMPACTOS NA QUALIDADE DA ENERGIA ELÉTRICA ORIUNDOS DAS LÂMPADAS FLUORESCENTES COMPACTAS INSTALADAS NO PROGRAMA LUZ PARA TODOS
    (Universidade Federal do Pará, 2012) NEVES, Cleonor Crescêncio das; COSTA JUNIOR, Carlos Tavares da
    The Brazilian Federal Program "Luz para Todos" provides installation kits that include three 15W compact fluorescent lamps in beneficiary households. These lamps exhibit a high level of harmonic distortion due to their auxiliary equipment. This study assesses the impact of these lamps on power quality by analyzing the injection of harmonics into distribution networks. Measurements of Total Harmonic Distortion (THD) were conducted, extending the analysis to a real distribution system operated by the CELPA utility company. The results indicate high levels of THD, significantly affecting the quality of power supplied to consumers.