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Aumento de rendimento e potência em painéis fotovoltaicos por reconfiguração das interconexões e arrefecimento geotérmico
(Universidade Federal de Santa Maria, 2018-08-27)
This doctoral thesis deals with the reconfiguration of photovoltaic interconnections linked to PV panel cooling by surface geothermal energy through water circulation to increase efficiency, power and lifetime of the ...
Contribuições ao controle do motor síncrono de ímã permanente com FCEM não senoidal
(Universidade Federal de Santa Maria, 2015-08-20)
This thesis presents contributions to the sensorless vector control of Permanent
Magnet Synchronous Motors (PMSM) with nonsinusoidal back Electromotive Force (back-
EMF), whose magnets are allocated on the rotor surface. ...
Avaliação da contaminação ambiental em um aterro sanitário de pequeno porte, sem utilização de geomembrana, na região noroeste do estado do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2019-05-29)
Landfills may lead to soil and water contamination (surface and groundwater) when improperly operated, especially if there is no geomembrane waterproofing system. Thus, this study aims to analyze changes in the sanitary ...
Seleção ótima de baterias armazenadoras de energia em redes de distribuição com geração distribuída considerando modelagem da operação por redes neurais
(Universidade Federal de Santa Maria, 2019-05-27)
This thesis presents a methodology for optimal determination of type, bar, and capacity of
Battery Energy Storage Systems (BESS) in distribution systems with distributed generation
(DG) where the battery optimal operation ...
Degradação de fármacos em efluente de uma estação de tratamento de esgoto sanitário utilizando processos avançados
(Universidade Federal de Santa Maria, 2018-10-18)
The high worldwide consumption of remedies, coupled with the incomplete assimilation by animals
and humans and the deficient removal by conventional effluent treatment systems, made the
pharmaceuticals a persistent group ...
Inversor multiníveis quasi-Z-source com fonte CC única e compartilhamento de potência ativa entre os módulos
(Universidade Federal de Santa Maria, 2019-07-26)
Due to its ability to provide Maximum Power Point Tracking (MPPT) control and independent
regulation of the DC bus voltage, this makes the inverter quasi-Z-Source (qZS) an attractive
candidate for applications in ...
Produção de óleo e material adsorvente a partir da biomassa do fungo Nigrospora sp.
(Universidade Federal de Santa Maria, 2019-07-24)
This works was focused on the production of microbial oil from the biomass of the fungus Nigrospora sp. and the reuse of defated residual biomass as a biosorbent to recovery dye from aqueous solution. The study was divided ...
Avaliação do potencial de cascas residuais como biossorventes para o tratamento de efluentes de simulados têxteis
(Universidade Federal de Santa Maria, 2019-08-12)
Industrial activities are the main causal agents in the contamination of waste water by dyes, due to the large amount of organic pollutants released in the effluents. In this scenario, adsorption has been pointed out as a ...
Substituição de transformadores de potência em subestações de energia: uma estratégia global
(Universidade Federal de Santa Maria, 2019-05-30)
The knowledge of the operating conditions of power transformers in substations is of great relevance to the power system in order to improve their reliability. From the point of view of the concessionaires, it is necessary ...
Metodologia para consideração de tendências climáticas em curvas IDF de precipitação
(Universidade Federal de Santa Maria, 2019-08-16)
Many studies show that extreme rainfall have changed their behavior in recent years, caused
by climate change. This fact has consequences such as increased occurrence of flood and
other critical events in urban areas. ...