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Mostrando ítems 41-50 de 318
Revisão de métodos de correção de fator de potência e projeto de um conversor boost PFC
(Universidade Tecnológica Federal do ParanáCampo MouraoBrasilDepartamento Acadêmico de EletrônicaEngenharia EletrônicaUTFPR, 2021-11-23)
Improving the conscious use of energy and its efficiency, the work proposes a resolution of how powers are dissipated in loads in alternating current and how the power factor can be applied to increase the efficiency of a ...
Implementação de um pré-regulador de fator de potência utilizando um conversor CC-CC boost
(Universidade Tecnológica Federal do ParanáCornelio ProcopioBrasilEngenharia ElétricaUTFPR, 2014-11-28)
The conventional rectifiers have input current with high harmonic distortion and low power factor, wasting power to the supply of dc loads. One of the existing solutions is the use of dc-dc converters for active power ...
Conversor eletrônico de alto fator de potência para alimentação de leds aplicando a técnica input current shaper
(Universidade Federal de Santa MariaBrasilEngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia ElétricaCentro de Tecnologia, 2017-07-31)
This work presents analysis, simulation, design and implementation of an integrated topology consisting of two static DC-DC converters to supply power LEDs, presenting high power factor. Power factor correction is essential ...
Reator eletrônico para lâmpadas de descarga em alta pressão baseado no conversor biflyback inversor
(Universidade Federal de Santa MariaBREngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia Elétrica, 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 ...
Control difuso para la corrección activa del factor de potenciaFuzzy logic control for active power factor correction
(Universidad del Norte, 2013)
Sistema eletrônico para lâmpadas fluorescentes de indução baseado na topologia sepic half-bridge bi-integrada com controle de intensidade luminosa por modulação de baixa frequência
(Universidade Federal de Santa MariaBREngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia Elétrica, 2015-06-15)
This master thesis presents the analysis and design of an electronic drive system for fluorescent induction lamps. This lighting technology, despite being patented since the 60s, is not widely diffused in the market context. ...
Correção do fator de potência de cargas industriais com dinâmica rápida
(Universidade Federal de Minas GeraisUFMG, 2009-11-20)
In some activity branches of industrial segment, as well in medium and large buildings and commercial facilities, expressive contingents of electrical equipments presents, as one of their main characteristics, fast operational ...
An AC voltage regulator with high-power-factor, and control using a FPGA device
(2005-12-01)
This paper presents the analysis, design, simulation, and experimental results for a high frequency high Power-Factor (PF) AC (Alternate Current) voltage regulator, using a Sepic converter as power stage. The control ...