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Estudo de viabilidadedde produção de energia elétrica por bombeamento de água com energia solar
(Universidade Tecnológica Federal do ParanáCuritibaBrasilCurso de Engenharia ElétricaUTFPR, 2018-06-13)
The present work presents a study regarding the technical analysis of the effectiveness of the implantation of a pumping system for accumulation of energy from solar sources. During the development of the study are exposed ...
Monitoramento do comportamento da corrente elétrica no processo de fresamento
(Universidade Tecnológica Federal do ParanáLondrinaBrasilEngenharia MecânicaUTFPR, 2020-10-19)
Most of the machine tools used in machining require electrical power as the main power source. Therefore, the gauging of the energy spent on machining can be a tool to help users make more profitable management decisions. ...
Caracterização de motores de corrente contínua com ímã permanente e comutador
(Universidade Tecnológica Federal do ParanáCuritibaBrasilEngenharia ElétricaUTFPR, 2019-09-19)
DC machines are power converters. In the case of the motor, it receives electrical energy and transforms it into mechanical energy, that is, it receives electrical energy from a DC source and converts the available shaft ...
Uma sequência didática para análise de circuitos elétricos a partir das concepções espontâneas dos estudantes
(Universidade Tecnológica Federal do ParanáMedianeiraBrasilPrograma de Pós-Graduação em Ensino de FísicaUTFPR, 2019-12-03)
In this work we present a Didactic Sequence (DS) for the use of computational simulators in the teaching of basic concepts aboutElectricity, at the high school level, exploring the spontaneous conceptions or the previous ...
Photo-induced electrical behavior under gas adsorption on SnO2 -based heterostructures
(2020-11-15)
Er-doped SnO2 thin films are produced by a combined technique where films are deposited by resistive evaporation from a precursor powder obtained by sol-gel. Films are deposited on different substrates and analyzed concerning ...
Desenvolvimento de um sistema de baixo custo para o monitoramento do desgaste de ferramenta de corte via corrente elétrica
(Universidade Tecnológica Federal do ParanáLondrinaBrasilEngenharia MecânicaUTFPR, 2019-06-11)
In machining processes, the premature replacement of cutting tools generates additional costs to the process and, when changed late, tool wear compromises surface quality and dimensional tolerances of the workpiece. In ...
Sistema fotovoltaico utilizando um conversor monofásico-trifásico com condicionamento ativo de energia para aplicações em redes monofásicas rurais
(Universidade Tecnológica Federal do ParanáCornelio ProcopioBrasilEngenharia de Controle e AutomaçãoUTFPR, 2016)
This work proposes a photovoltaic system connected to an inverter with single-phase input and three-phase output, with universal filtering capabilities. This system is able to inject the energy extracted from the photovoltaic ...
Inversor monofásico isolado conectado à rede baseado na topologia boost-full-bridge com redução ativa da ondulação de baixa frequência da corrente de entrada
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Sistemas de EnergiaUTFPR, 2020-08-17)
This Master’s Dissertation consists of the development of a boost-full-bridge topology isolated single-phase inverter with active reduction of the input current low frequency ripple through the unfolding methodology. The ...
A Short Note on a Nonlinear System vibrations under Two Non-Ideal Excitations
(2003-10-01)
This paper describes a nonlinear phenomenon in the dynamical behavior of a nonlinear system under two non-ideal excitations: the self-synchronization of unbalanced direct current motors. The considered model is taken as a ...