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Computational aspects of harmonic wavelet Galerkin methods and an application to a precipitation front propagation model
(PERGAMON-ELSEVIER SCIENCE LTD, 2011)
This article is dedicated to harmonic wavelet Galerkin methods for the solution of partial differential equations. Several variants of the method are proposed and analyzed, using the Burgers equation as a test model. The ...
Análise do impacto das distorções harmônicas de tensão nas componentes de corrente definidas pela CPT e CPC
(Universidade Estadual Paulista (Unesp), 2021-06-09)
Este trabalho propõe analisar e discutir a influência das distorções harmônicas de tensão em cargas monofásicas lineares e não lineares. Através das correntes/potências decompostas das Teorias de Potência conhecidas como ...
Comment on: Harmonic oscillator in an environment with a pointlike defect. (2019 Phys. Scr. 94 125301)
(IOP Publishing, 2021-02)
We analyze recent results for a harmonic oscillator in an environment with a pointlike defect. We show that the allowed oscillator frequencies predicted by the authors stem from a misinterpretation of the exact solutions ...
Detection of limit cycle bifurcations using harmonic balance methods
(World Scientific, 2004-12)
In this paper, bifurcations of limit cycles close to certain singularities of the vector fields are explored using an algorithm based on the harmonic balance method, the theory of nonlinear feedback systems and the monodromy ...
Projeto e implementação de um filtro ativo universal trifásico controlado digitalmente
(Universidade Tecnológica Federal do ParanáCuritibaPrograma de Pós-Graduação em Engenharia Elétrica e Informática Industrial, 2010-12-15)
This paper presents the development and implementation of a three-phase universal active filter consisting of three single-phase modules. Each single-phase module is independent and is controlled by a digital signal ...
A new three-phase transformer modeling for three-phase harmonic analysis in distribution systems
(Institute of Electrical and Electronics Engineers (IEEE), 2005-01-01)
This work presents a new three-phase transformer modeling suitable for simulations in Pspice environment, which until now represents the electrical characteristics of a real transformer. It is proposed the model comparison ...
Análise da penetração harmônica em redes de distribuição desequilibradas devido às cargas residenciais e comerciais com a utilização do ATP
(Universidade Federal de Minas GeraisUFMG, 2007-12-20)
With the increasing need for efficient electrical energy consumption and the constant increase in efficient electronic equipment encouraged by PROCEL incentives, the current harmonic distortion injected into the electrical ...
A full compensating system for general loads, based on a combination of thyristor binary compensator, and a PWM-IGBT active power filter
(IEEE, 2001)
A full compensating system for distribution networks which is able to eliminate harmonics, correct unbalanced loads and generate or absorb reactive power is presented. The system is based on a combination of a thyristor ...