Artigos
URI permanente para esta coleçãohttps://rigalileo.itegam.org.br/handle/123456789/219
Artigos produzidos de convênios e parcerias com IES
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Resultados da Pesquisa
Item Análisis de los Impactos Armónicos en la industria de la electrónica utilizando árboles de decisión.(Instituto de Tecnologia, 2012) NOGUEIRA, Rildo de Mendonça; OLIVEIRA, Edson Farias de; SILVA, Waterloo Ferreira da; SANTANA, Ádamo L.; TOSTES, Maria Emília de Lima; SOARES, Thiago Mota.; BRASIL, Davi do Socorro BarrosThis study analyzes the impacts of current harmonics on the electrical grid of an electronics industry in the Manaus Industrial Park, focusing on the manufacturing of computers, notebooks, and tablets. Using power quality analyzers and decision tree techniques, the work quantifies the total harmonic distortion (THD) and identifies the most impactful harmonics, such as the 5th and 7th orders, generated by non-linear loads. The results demonstrate the effectiveness of the applied methodology to anticipate future regulations and improve energy quality.Item Aplicação de Filtro Harmônico em Sistemas Elétricos de Baixa Tensão utilizando Lógica Fuzzy(Instituto de Tecnologia, 2010) CIRINO, Weverson dos Santos; LEITE, Jandecy Cabral; COSTA JUNIOR, Carlos Tavares da; TOSTES, Maria Emilia de Lima; QUARESMA, João Nazareno NonatoThe article discusses the application of passive harmonic filters in low-voltage electrical systems to mitigate distortions caused by harmonics, using Fuzzy Logic. The proposed algorithm analyzes and detects harmonic components exceeding 5% of the fundamental coefficient, designing customized filters. The methodology includes computational simulations and validation according to IEC standards, demonstrating effectiveness in reducing distortions and improving power quality.Item Aplicação de Óleo Vegetal de Andiroba (Carapa guianensis) como Fluido Dielétrico em Transformadores de Potência(Instituto de Tecnologia, 2013) PINTO, Vagner Barroso; LEITE, Jandecy Cabral; FUJIYAMA, Roberto Tetsuo; LOPES, Raimundo Valdan Pereira; BRITO JUNIOR, Jorge Almeida; QUARESMA, João Nazareno NonatoThe study investigated the use of andiroba vegetable oil (Carapa guianensis) as an alternative dielectric fluid in power transformers, aiming to replace petroleum-derived mineral oils. Physical-chemical and electrical properties of the oil were evaluated and compared with technical standards (ABNT NBR 15422) and commercial oils (BIOTEMP®, ENVIROTEMP® FR3™). Results indicated that andiroba oil has suitable viscosity and density, is biodegradable, and non-corrosive. However, specific treatments are required to adjust parameters such as water content and dielectric strength. It was concluded that andiroba oil is a viable candidate for transformer applications, leveraging renewable resources from the Amazon.Item Avaliação de impactos harmônicos na rede elétrica através dos indicadores THD e Fator de Potência utilizando Lógica Fuzzy(Instituto de Tecnologia, 2013) GONÇALVES, Benevaldo Pereira; BRITO JUNIOR, Jorge Almeida; LEITE, Jandecy Cabral; COSTA JUNIOR, Carlos Tavares da; TOSTES, Maria Emilia de Lima; CUNHA, Edinaldo José de SousaThe study proposes an analysis of power quality in low-voltage three-phase systems using THD (Total Harmonic Distortion) and Power Factor indicators, based on a Fuzzy inference system. The method integrates expert knowledge and current standards to classify harmonic distortions and energy efficiency, avoiding manual regulation checks. Results demonstrate the system's effectiveness in identifying critical conditions, such as high THD and low Power Factor, recommending corrective actions.