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Itens para a visualização no momento 211-220 of 306
Compensação das formas de onda distorcidas pela saturação de transformadores de corrente com auxílio da estimação de frequência
(Universidade Federal de Santa Maria, 2015-03-02)
This work presents innovative methods for detection and correction of the distorted portions of the secondary current waveforms, which occur due to the core saturation of current transformers (CTs). The detection technique ...
Co-projeto de perspectiva completa para conversores CC-CC com controlador digital
(Universidade Federal de Santa Maria, 2017-03-20)
Cyber-physical systems performance are dependents of cyber and physical domains. This work
applied a cyber-physical approach in digitally controlled power converter. This thesis proposes
a new full perspective co-design ...
Análise teórica e experimental da transmissão de forças na junção de aduelas pré-moldadas de pontes protendidas
(Universidade Federal de Santa Maria, 2020-04-07)
There is a growing demand for bridges with prestressed precast segments, thus, the need for further study and development of this system is evident. Currently, these bridges use connections between segments by joints with ...
Estratégias de modulação para conversores multiníveis com capacitores flutuantes
(Universidade Federal de Santa Maria, 2019-01-30)
This Thesis contributes to the modulation of the multi-level three-phase converter with
flying capacitors, for which simulations were performed to validate three different
modulation algorithms. The first one is a phase ...
Aproveitamento da energia geotérmica superficial para aumentar a eficiência de condicionadores de ar e reduzir o pico de demanda
(Universidade Federal de Santa Maria, 2018-09-12)
This doctoral thesis is a contribution to reduce the electric load in thermal conditioning of residences in order to mitigate its influence on the duck curve. It is proposed the use of air conditioning units driven by ...
Modelo de avaliação do potencial competitivo para instaladoras de sistemas fotovoltaicos
(Universidade Federal de Santa Maria, 2022-06-13)
Electricity generation through photovoltaic technology is promising worldwide. In this market, photovoltaic systems’ installers are the link between the entire production chain and consumers. These companies are frequently ...
Metodologia para detecção e classificação de faltas em transformadores de potência por meio da Transformada Wavelet Discreta
(Universidade Federal de Santa Maria, 2018-08-28)
This thesis presents the development of a methodology for the detection and
classification of electrical transients in power transformers, for protection purposes. For this,
we analyzed several electrical transients ...
Compressibilidade de resíduos sólidos urbanos devido aos processos de biodegradação em um aterro sanitário
(Universidade Federal de Santa Maria, 2019-01-14)
The municipal solid waste (MSW) contain a high content of organic matter, which generates leachate and gases due to biodegradation processes, resulting in settlements. Storage capacity and slope stability are among the ...
Escoamento superficial e infiltração de água no solo em sistema plantio direto com “vertical mulching”
(Universidade Federal de Santa Maria, 2018-10-26)
The reduced infiltration of water into the soil in areas of intensive agriculture is one of the main
problems in hydrology. It decreases the water content in the soil profile and causes an increase in
surface runoff which ...
Produção de biodiesel em escala piloto via hidroesterificação enzimática
(Universidade Federal de Santa Maria, 2021-02-19)
The report “State of the Climate” released by the World Meteorological Organization at 25th Climate Changes Conference highlights that 2019 ends an alarming decade regarding the historical increase in the average temperature ...