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Eletrônica de Potência
Article . 2018 . Peer-reviewed
License: CC BY
Data sources: Crossref
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Eletrônica de Potência
Article . 2018
Data sources: DOAJ
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Inversor Boost a Capacitor Chaveado Conectado à Rede Elétrica

Authors: Jéssika M. de Andrade; Gilberto V. Silva; Roberto F. Coelho; Telles B. Lazzarin;

Inversor Boost a Capacitor Chaveado Conectado à Rede Elétrica

Abstract

Neste artigo propõe-se o emprego do inversor boost diferencial a capacitor chaveado (SCDBI) em aplicações que requerem conexão com a rede elétrica. O SCDBI é um inversor elevador, cujo ganho pode ser aumentado a partir da adição de células a capacitor chaveado, e possui saída em tensão, o que permite injetar correntes na rede com baixa ondulação usando apenas um filtro L. Esses atributos favorecem o emprego da topologia em sistemas de estágio único, onde a tensão de entrada é menor que o valor de pico da tensão de saída. Alguns dos desafios atrelados ao uso do SCDBI estão relacionados à característica de ganho não linear e aos modelos dinâmicos de ordem elevada. Neste artigo, é proposta uma modelagem simplificada e uma técnica de linearização estática, que possibilitam a utilização de um controlador proporcional-integral e uma malha de feedforward para controlar a corrente injetada na rede elétrica. O trabalho também aborda a análise estática do conversor com modulação unipolar e apresenta os procedimentos de dimensionamento. A validação do estudo é feita através dos resultados obtidos a partir de um protótipo de 250 W, conectado à rede de 220 V eficaz, com tensão de entrada de 60 V, frequência de comutação de 50 kHz, rendimento de 90% e corrente de saída com THD menor que 5%.

Related Organizations
Keywords

Capacitor chaveado, Controle, Linearização, Electrical engineering. Electronics. Nuclear engineering, Inversor boost, Modelagem, Conexão com a Rede Elétrica, TK1-9971

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
3
Average
Average
Average
gold