Revista Eletrônica de Potência (Brazilian Journal of Power Electronics)

Palavras Chaves: Conversor bidirecional CC-CC, Conversor Boost, Conversor Buck, Conversor não isolado

Resumo
Neste artigo, uma nova topologia não isolada de conversor CC-CC bidirecional baseado no conversor boost/buck clássico é proposta. O conversor proposto pode operar tanto em modo elevador quanto abaixador de tensão e apresenta como principais características: baixo esforço de tensão e corrente nos componentes, simplicidade de operação e diferentes modos de operação, tais como: síncrono e assíncrono. Para garantir um bom desempenho do conversor proposto, a modelagem e controle foi desenvolvida neste artigo. Desta forma, para validar as avaliações teóricas, um protótipo de 1 kW, 144 V/400 V foi desenvolvido em laboratório, alcançando uma eficiência de pico de 94,2 % para 500W.

Title: ANALYSIS AND DEVELOPMENT OF A NON-ISOLATED BIDIRECTIONAL CONVERTER BASED ON BOOST/BUCK DC-DC CONVERTER

Keywords: Bidirectional dc-dc converter, Boost Converter, Buck converter, Non-isolated converter

Abstract
In this paper, a new non-isolated bidirectional DC-DC converter topology based on classical boost/buck bidirectional DC-DC converter is proposed. The proposed converter can operate in both mode, step-up and stepdown and it presents as main features: low current and voltage stresses on components, simplicity of operation and differents operation modes, such as: synchronous and asynchronous. To ensure a good performance of the proposed converter, the modeling and control of the proposed converter is done in this paper. To validate the theoretical evaluations, a 1kW, 144 V/400 V prototype was developed in the laboratory, achieving a peak of efficiency of 94.2 % for 500W.

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