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Desenvolvimento de um inversor fotovoltaico trifásico não isolado conectado à rede elétrica
(Universidade Federal de Santa Maria, 2015-03-09)
This Master Thesis presents the development of a grid-connected transformerless
three-phase photovoltaic inverter. The Neutral Point Clamped (NPC) three-level inverter was
chosen for implementation. The grid connection ...
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 ...
Despacho ótimo de pequenas centrais hidrelétricas para minimização da contratação do suprimento
(Universidade Federal de Santa Maria, 2013-09-13)
This Master s Dissertation presents the development of a methodology to optimize the modulation of dispatch of Small Hydro Power Plants (SHPs). The main objective is to minimize the cost of supplying contracts, which ...
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 ...
Estudo e desenvolvimento de uma fonte CA de potência híbrida baseada em conversor multinível modular
(Universidade Federal de Santa Maria, 2013-08-30)
This Master Thesis presents an AC Power Source (ACPS) study contribution through the
proposal, design and implementation of a novel hybrid ACPS topology. In general, the
proposed hybrid topology is defined from the series ...
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 ...
Análise da estabilidade de pequenas centrias hidrelétricas em operação isolada
(Universidade Federal de Santa Maria, 2016-03-21)
Islanding occurs when a part of the electrical system is supplied solely by a unit or group of distributed generators isolated from the main electrical network. When the center of Distributed Generation (DG) operates ...
Desenvolvimento de um sistema de controle e supervisão de inversor para turbinas eólicas
(Universidade Federal de Santa Maria, 2017-01-20)
The worldwide interest in renewable energy has increased, with a large emphasis on wind energy. In this sense, this work presents the supervision and control of an inverter for wind turbines. It uses a three-phase PWM ...
Modelagem de uma curva diária equivalente anual de geração fotovoltaica aplicando em um cenário
(Universidade Federal de Santa Maria, 2019-02-27)
In this study there will be presented an evaluation methodology and scaling of a photovoltaic system with credit compensation. For the validation of the data the computational tool Radiosol 2 was used for the scenery of a ...
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 ...