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Modelagem geométrica do conversor buck-boost não-inversor usado na interface de nanorrede CC residencial
(Universidade Federal de Santa Maria, 2021-06-29)
This dissertation presents the control system for a DC-Nanogrid based on the DCBus
Signalling technique. Converter principle of operation is described and its control
loops are designed. Modulation geometric approach is ...
Proposta de índice para a avaliação da coordenação e seletividade de esquemas proteção de sobrecorrente em sistemas aéreos de distribuição
(Universidade Federal de Santa Maria, 2021-02-12)
Overhead distribution systems are constantly exposed to external agents that may negatively influence their operation. In this sense, protection in distribution plays an essential role in maintaining the correct functioning ...
Análise e projeto de um boost PFC + ZAHB para luminárias led CA-CC
(Universidade Federal de Santa Maria, 2021-02-25)
This master’s thesis presents the analysis and design of a two-stage 100W and
universal input ac-dc LED driver. The driver’s front-end topology is composed by a
PFC (Power Factor Corrector) boost converter whereas the ...
Análise da tensão do ponto neutro para o inversor ANPC de três portas: uma abordagem vetorial
(Universidade Federal de Santa Maria, 2020-10-08)
The ANPC topology with secondary bi-directional DC port (ANPC-3P) allows the connection
of energy storage systems (ESS) directly to the topology on a secondary DC port, assigning an
additional task to the inverter. In ...
Desenvolvimento de uma metodologia para automatização dos processos de manobra em redes de distribuição de energia elétrica utilizando algoritmos evolutivos
(Universidade Federal de Santa Maria, 2020-02-11)
The present work approaches the Service Restoration Problem in electrical distribution networks.
Therefore, a multi-objective evolutionary algorithm is developed considering the total de-energized
load, the number of ...
Metodologia para previsão da durabilidade e eficiência de geração fotovoltaica em suas diferentes topologias
(Universidade Federal de Santa Maria, 2020-02-28)
The growth in demand for electricity and the search for sustainable sources of electricity put photovoltaic generation (PV) as one of the main alternatives. Taking into account that PV panels are used to generate electrical ...
Análise dos impactos dos veículos elétricos nos sistemas de distribuição considerando o modo V2G e o transporte de energia
(Universidade Federal de Santa Maria, 2020-02-27)
The aim of this master’s dissertation is to evaluate the insertion of electric vehicles (EVs) in a Distribution System through its energy charging and discharging modes. Motivated by the expansion of the EVs market and the ...
Circuito de acionamento de chaves semicondutoras de potência empregando transformador piezoelétrico
(Universidade Federal de Santa Maria, 2020-10-15)
This thesis presents a proposal for a gate-driver system, for MOSFET and IGBT power semiconductor devices, which uses a piezoelectric transformer in the power circuit and communication channel. Thus, a bibliographical ...
Análise do impacto de sistemas de recarga lenta de veículos elétricos em redes de distribuição secundária
(Universidade Federal de Santa Maria, 2021-02-18)
This work presents a contextualization about electric vehicles, a technology that is gaining significant
space around the world. Much because of the concern to reduce the emission of pollutants such as CO2,
and in parallel ...
Projeto e análise de observadores para o controle sensorless de máquinas BLDC aplicadas na tração de veículos elétricos
(Universidade Federal de Santa Maria, 2021-02-25)
This master’s thesis presents a sensorless control of a BLDC machine for the traction
of electric vehicles. Due to its characteristics, the BLDC is an excellent candidate
for such application. In this context, the safety ...