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Mostrando ítems 601-610 de 2101
Desenvolvimento de experiências de acionamento e controle do movimento angular de motores de indução trifásico
(Universidade Estadual Paulista (Unesp), 2015)
Linking origin of the electric field-assisted beta-PbF2 crystallization in lead oxyfluoroborate glasses below T (g) to simultaneous cathode/anode-compensated electrochemical reactions
(SPRINGERNEW YORK, 2012)
Full validation of the electrochemical mechanisms so far postulated as driving force of electric field-assisted non-spontaneous crystallization development in given glasses has suffered experimental restrictions. In this ...
Assessing the effectiveness of peer instruction in students' understanding of electric circuits concepts
(AMER SOC ENGINEERING EDUCATION, 2019-01-01)
This paper describes the implementation of an active learning strategy, called Peer Instruction, in an undergraduate electric circuit analysis course offered at a large public university in Colombia. Peer Instruction is ...
Control de alto desempeño para un motor de reluctancia conmutada basado en rechazo de perturbaciones periódicas y técnicas ADRC
(Bogotá - Ingeniería - Maestría en Ingeniería - Automatización IndustrialUniversidad Nacional de Colombia - Sede Bogotá, 2019-05-25)
The switched reluctance motor is a relatively simple electrical machine that is attractive in different applications given its high efficiency characteristics, high torque at low speed, low manufacturing costs, among others. ...
Estudio Comparativo de un Sistema de Freno Regenerativo y Regeneración con Energía Cinética Constante en Vehículos Eléctricos de Batería
(Universidad Distrital Francisco José de CaldasBogotá, Colombia., 2020)
Contexto: El incremento constante en el uso de vehículos eléctricos a nivel mundial ha motivado investigaciones para mejorar la autonomía de los mismos frente vehículos de combustión tradicionales. Este artıculo ...
Investigation of nonlinear dielectric properties in Sr0.75Ba0.25Nb2O6 relaxor ferroelectric thin films
(American Institute of Physics (AIP), 2008-01-01)
The ac and dc driving fields dependence of the dielectric permittivity for the strontium barium niobate relaxor ferroelectric thin films has been investigated. The nonlinear dielectric properties were obtained by using the ...
The application of resistivity and EM method to monitor vinasse infiltration in sandy sediments
(2014-01-01)
The cultivation of sugar cane represents one of the most important agricultural supplies in Brazil. One one of its driving factors is the production of etanol, a widely used fuel for Brazilian automobiles. Among the residue ...
Análise da eficiência energética de um carro elétrico na cidade de São Paulo.
(Universidade Estadual Paulista (Unesp), 2021-08-05)
O dióxido de gás carbono (CO2) representa um risco para o meio ambiente e para a saúde da população. A sua elevada concentração na atmosfera acarreta o aumento dos gases de efeito estufa, que colaboram para o aquecimento ...
Controle de conversor multinível modular para acionamento de um sistema de propulsão naval baseado em motor síncrono de ímãs permanentes
(Universidade Federal de Juiz de Fora (UFJF)BrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2023)