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Demercil de Souza Oliveira
Researcher at Federal University of Ceará
Publications - 41
Citations - 644
Demercil de Souza Oliveira is an academic researcher from Federal University of Ceará. The author has contributed to research in topics: Topology (electrical circuits) & Voltage. The author has an hindex of 10, co-authored 40 publications receiving 546 citations.
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Journal ArticleDOI
Novel Nonisolated High-Voltage Gain DC–DC Converters Based on 3SSC and VMC
TL;DR: In this paper, a new family of dc-dc converters based on the three-state switching cell and voltage multiplier cells is introduced, which can be applied in uninterruptible power supplies, fuel cell systems, and is also adequate to operate as a high-gain boost stage with cascaded inverters in renewable energy systems.
Journal ArticleDOI
DC–DC Nonisolated Boost Converter Based on the Three-State Switching Cell and Voltage Multiplier Cells
TL;DR: This work introduces a dc-dc boost converter based on the three-state switching cell and voltage multiplier cells that can be applied to uninterruptible power supplies and is also adequate to operate as a high gain boost stage cascaded with inverters in renewable energy systems.
Proceedings ArticleDOI
A High Step-Up DC-DC Converter Based on Three-State Switching Cell
Grover V. Torrico-Bascope,Samuel Vasconcelos,Rene P. Torrico-Bascope,Fernando L. M. Antunes,Demercil de Souza Oliveira,Carlos Gustavo C. Branco +5 more
TL;DR: An important feature of this non-isolated boost converter is the lower blocking voltage across the controlled switches compared to similar circuits, which allows the utilization of MOSFETs switches with lower conduction resistances RDS(on).
Journal ArticleDOI
Soft switching high-voltage gain dc-dc interleaved boost converter
Ranoyca Nayana Alencar Leão e Silva Aquino,Fernando Lessa Tofoli,Paulo P. Praca,Demercil de Souza Oliveira,Luiz H. S. C. Barreto +4 more
TL;DR: This study presents the qualitative and quantitative analyses, design procedure and experimental results on a soft switching cell applied to a high-voltage gain interleaved boost converter with main advantages of a hard switching topology.
Proceedings ArticleDOI
Proposal of a New High Step-Up Converter for UPS Applications
TL;DR: In this article, a voltage doubler rectifier was used as the output stage of an interleaved boost converter with coupled inductors, and the obtained voltage gain was twice that of traditional boost converters due to the doubler stage, although voltage stress across the switches was not increased.