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Fault current limiter using transformer and modular device of YBCO coated conductor
(2013-04-08)
In this work, we report on the evaluation of a superconducting fault current limiter (SFCL). It is consisted of a modular superconducting device combined with a short-circuited transformer with a primary copper winding ...
Fault current limiter using transformer and modular device of YBCO coated conductor
(2013-04-08)
In this work, we report on the evaluation of a superconducting fault current limiter (SFCL). It is consisted of a modular superconducting device combined with a short-circuited transformer with a primary copper winding ...
Projeto e montagem de um laboratório de testes de rotina de transformadores
(Universidade Tecnológica Federal do ParanáCornelio ProcopioBrasilEngenharia ElétricaUTFPR, 2017-08-07)
Transformers are vital and costly equipments for the distribution and transmission of electricity. So, it is indispensable to make sure that there are no constructive failures in these equipments, being necessary for these ...
Estratégias de controle para correção da distorção harmônica da corrente de entrada do retificador Boost em MCD entrelaçado em série
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Sistemas de EnergiaUTFPR, 2019-05-15)
This work proposes two control techniques based on variable duty-cycle for the serial interleaved boost rectifier. The purpose of the control strategies is to increase the power factor and efficiency of the rectifier by ...
Transformer Operation at Deep Saturation: Model and Parameter Determination
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INCPISCATAWAY, 2012)
This paper proposes a model that adequately describes the operation of the transformer at deep saturation, suitable for power-electronics applications, and a method for determining its parameters. Simulation and experimental ...
Análise comparativa da eficiência energética em transformadores de baixa potência
(Universidade Tecnológica Federal do ParanáCuritibaBrasilBacharelado em Engenharia ElétricaUTFPR, 2019-11-21)
In this work a case study regarding the energy efficiency comparison between a toroidal core transformer and a square core transformer. Both have as nominal data and characteristics: core wrapped, 110V-220V, 550VA, 60Hz, ...
A constructive heuristic algorithm to Short Term Transmission Network Expansion Planning
(2004-12-01)
In this paper a method for solving the Short Term Transmission Network Expansion Planning (STTNEP) problem is presented. The STTNEP is a very complex mixed integer nonlinear programming problem that presents a combinatorial ...
A constructive heuristic algorithm to Short Term Transmission Network Expansion Planning
(2004-12-01)
In this paper a method for solving the Short Term Transmission Network Expansion Planning (STTNEP) problem is presented. The STTNEP is a very complex mixed integer nonlinear programming problem that presents a combinatorial ...
Transformador monofásico com núcleo LL: projeto e montagem
(Universidade Tecnológica Federal do ParanáPato BrancoBrasilDepartamento Acadêmico de ElétricaEngenharia ElétricaUTFPR, 2021-08-02)
Transformers are electrical equipment widely used for converting voltage levels. The elaboration of projects for transformers with an unconventional ferromagnetic core is important, as it contributes to the construction ...