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Análise e controle de um conversor CA-CC com elevado ganho de tensão aplicado a um sistema de geração de micro-ondas
(Universidade Federal de Santa Maria, 2016-07-28)
This master thesis performs the analysis and design of an AC-DC converter with high voltage
gain to be used to supply a magnetron in a microwave generation system. The converter topology
is chosen so as to enable input ...
Projeto e desenvolvimento de um microinversor buck de elevado rendimento conectado à rede elétrica com filtro LCL
(Universidade Federal de Santa Maria, 2018-08-06)
Micro-inverters are small single-phase photovoltaic power generation modules that connect directly to
a photovoltaic panel and the electrical grid, which typically consist of a DC-DC stage and a DC-AC
stage. The topology ...
Análise do carregamento de veículos elétricos na curva de carga do transformador de distribuição
(Universidade Federal de Santa Maria, 2017-12-04)
The objective of this dissertation is to evaluate the insertion of Electric Vehicles (EVs) on the distribution system. Motivated by the shortage of deterministic data regarding the process of charging EVs batteries, a ...
Indicador de vulnerabilidade operacional para priorização e substituição de transformadores de potência em subestações
(Universidade Federal de Santa Maria, 2018-02-19)
This thesis presents a new methodology for the classification and substitution of power
transformers in substations. The thesis proposes the use of the Operational Vulnerability
Indicator (OVI), which consists of two ...
Estratégias multimalhas para controle de corrente de inversores conectados à rede por meio do filtro LCL
(Universidade Federal de Santa Maria, 2018-02-26)
This master thesis presents contributions to the study and development of current
control of the grid-tied inverter through an LCL filter, by using multiloop control strategies.
In the first proposed scheme, the inner ...
Sistema de controle para conversores modulares multiníveis utilizados em conexões HVDC de parques eólicos offshore
(Universidade Federal de Santa Maria, 2018-02-27)
This work presents a brief history of the wind generation system in general and
the detailed history of the offshore wind generation system. Current data on installed
capacity, power of used wind turbines and distance ...
Algoritmo para cálculo e compensação da corrente capacitiva aplicado em relés diferenciais para proteção de linhas de ultra alta tensão
(Universidade Federal de Santa Maria, 2017-12-05)
Transmission lines have different characteristics and properties that define their parameters. One of the main components that is included in the modeling is the shunt capacitance. It generates a current that becomes ...
Imunidade contra surtos de tensão em sistemas de iluminação
(Universidade Federal de Santa Maria, 2018-02-28)
This work presents a new point of view about electrolytic capacitor reduction in lighting
systems. While most of studies focus only in the functionality of the driver, as ripple current
and time response they don’t check ...
Sistema de supervisão local/remoto para pequenas centrais de geração elétrica
(Universidade Federal de Santa Maria, 2018-03-23)
Supervisory systems are widely used in power generation systems. They allow
operation analysis by means of a human-machine interface, which acts on the plant. In
addition, supervisory systems can be used to check operating ...
Impacto do controle Volt/VAr em redes de distribuição a partir da exploração do potencial dos inversores de sistemas fotovoltaicos
(Universidade Federal de Santa Maria, 2018-08-29)
The presence of Distributed Generation is a reality in the Brazilian electric sector, with the prospect that increasingly the participation of these sources contributes to the energy matrix of our country. Faced with this ...