Buscar
Itens para a visualização no momento 371-380 of 437
Projeto de controle e implementação de piloto automático para veículos agrícolas
(Universidade Federal de Santa Maria, 2023-02-15)
This work presents the design and implementation of a steering autopilot for agricultural
vehicles. Controllers are presented for the alignment and operation steps, which aims to
take the vehicle to the path and keep it ...
Estudo e avaliação de sistemas de troca térmica com resfriamento líquido aplicados em inversores para tração elétrica
(Universidade Federal de Santa Maria, 2023-02-15)
This master thesis presents a study and analysis of liquid-cooled thermal exchange systems for electric traction inverters. The advancement of high-performance microprocessor
systems allowed inverter models with greater ...
Análise, projeto e implementação de um D-STATCOM para redes de distribuição monofásica
(Universidade Federal de Santa Maria, 2012-07-31)
This work analyzes a voltage regulator applied to low-voltage single-phase distribution networks, especially long distribution rural distribution lines with problems to comply with voltage level standards. This voltage ...
Controle de velocidade sensorless de motores brushless DC submetidos a variações periódicas de carga
(Universidade Federal de Santa Maria, 2011-07-21)
This master thesis presents a sensorless speed control drive of Brushless DC motors
used in reciprocating compressors. These compressors cause periodic load torque
variations on the motor, consequently mechanical vibrations ...
Modulador SI-ΣΔ cascata 2-2 empregando arquitetura de baixa distorção aplicado à conversão AD
(Universidade Federal de Santa Maria, 2012-03-16)
The increasing complexity of digital circuits forces the use of new technologies. New technologies
have the advantage of reducing the circuit size and power consumption coupled with
operation speed increasement. Most of ...
Análise de compensação capacitiva para a máxima transferência de energia com acoplamento indutivo
(Universidade Federal de Santa Maria, 2020-01-20)
This work deals with the study of a wireless power transmission system using loosely magnetically coupled coils. An analysis is made of the parasitic effects of the components in an equivalent circuit using a single frequency ...
Alocação ótima de estações de recargas rápidas em rodovias considerando critérios de diversas naturezas
(Universidade Federal de Santa Maria, 2021-07-29)
The growth of global concern with environmental issues is directly linked to the need
to decarbonise the vehicle fleet in order to achieve the objectives set out in the Paris
Agreement. The advance of the circulation of ...
Detecção e classificação de transitórios em redes de distribuição para identificação de faltas de alta impedância
(Universidade Federal de Santa Maria, 2013-03-08)
Protection systems used in distribution networks of electricity are not able to detect short circuits with high contact resistance due to the low currents generated, endangering the population and degrading the quality of ...
Análise das relações das tensões de entrada de inversores multiníveis híbridos conectados em cascata para minimizar a THD da tensão de saída
(Universidade Federal de Santa Maria, 2012-04-27)
This Master Thesis presents a study considering multilevel inverters formed from two and three level cascaded inverters.
The literature presents several papers on asymmetric multilevel inverters and most studies are related ...
Reator eletrônico para lâmpadas de descarga em alta pressão baseado no conversor biflyback inversor
(Universidade Federal de Santa Maria, 2011-07-26)
The study of the best utilization of high intensity discharge lamps deals with the great global concern with energy efficiency. Electronic ballasts are the current devices that can make the good use of high luminous efficacy ...