High-Voltage-Gain Integrated Boost-Sepic DC-DC Converter for Renewable Energy Applications

Authors

  • Bruno G. de Assis Universidade Tecnológica Federal do Paraná – UTFPR, Campus Ponta Grossa, Ponta Grossa – PR, Brasil
  • Eduardo P. C. Braga Universidade Tecnológica Federal do Paraná – UTFPR, Campus Ponta Grossa, Ponta Grossa – PR, Brasil
  • Claudinor B. Nascimento Universidade Tecnológica Federal do Paraná – UTFPR, Campus Ponta Grossa, Ponta Grossa – PR, Brasil
  • Eloi Agostini Júnior Universidade Tecnológica Federal do Paraná – UTFPR, Campus Ponta Grossa, Ponta Grossa – PR, Brasil

DOI:

https://doi.org/10.18618/REP.2019.3.0025

Keywords:

High Voltage Gain, integrated boost-SEPIC, Renewable energy systems, snubberless converter

Abstract

This paper presents the analysis of a non-isolated high-voltage-gain single-switch dc-dc converter based on the integration of the boost and SEPIC topologies. The converter employs a voltage multiplier at the output of the SEPIC stage, which is connected in series with the output of the boost stage, aiming a high step-up ratio operation with limited duty cycle values. An accurate steady state analysis considering the influence of the leakage inductance of the SEPIC coupled inductor in the energy transfer process is detailed in the paper. The several theoretical results are then used to derive a design methodology for the circuit. Experimental results for a 500 W, 48 V input voltage, 400 V output voltage, 96.3% peak efficiency and 100 kHz switching frequency prototype are provided to demonstrate the feasibility of the proposed scheme and to validate the mathematical analysis carried out.

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Author Biographies

Bruno G. de Assis, Universidade Tecnológica Federal do Paraná – UTFPR, Campus Ponta Grossa, Ponta Grossa – PR, Brasil

born in 05/26/1997 in Avaré-SP is an electrical engineering student with the Federal University of Technology – Parana. His areas of interest are: power converters and renewable energy processing.

Eduardo P. C. Braga, Universidade Tecnológica Federal do Paraná – UTFPR, Campus Ponta Grossa, Ponta Grossa – PR, Brasil

born in 10/20/1995 in Rio de Janeiro-RJ is an electrical engineering student with the Federal University of Technology – Parana. His areas of interest are: power converters, lighting systems, digital controllers and renewable energy processing.

Claudinor B. Nascimento, Universidade Tecnológica Federal do Paraná – UTFPR, Campus Ponta Grossa, Ponta Grossa – PR, Brasil

born in 06/05/1971 in Tubarão-SC is an electrical engineer (1994), master (1996) and doctor (2005) in Electrical Engineering with the Federal University of Santa Catarina. He is currently a titular professor at the Federal University of Technology – Parana. His areas of interest are: lighting system, power factor correction circuits and new converter topologies.

Eloi Agostini Júnior, Universidade Tecnológica Federal do Paraná – UTFPR, Campus Ponta Grossa, Ponta Grossa – PR, Brasil

born in 01/19/1983 in Lages-SC is an electrical engineer (2006), master (2008) and doctor in Electrical Engineer (2012) with the Federal University of Santa Catarina. He is currently a full professor at the Federal University of Technology – Parana. His areas of interest are: power converters, soft switching, power factor correction, converter modeling and renewable energy processing.

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Published

2019-09-30

How to Cite

[1]
B. G. de Assis, E. P. C. Braga, C. B. Nascimento, and E. A. Júnior, “High-Voltage-Gain Integrated Boost-Sepic DC-DC Converter for Renewable Energy Applications”, Eletrônica de Potência, vol. 24, no. 3, pp. 336–344, Sep. 2019.

Issue

Vol. 24 No. 3 (2019)

Section

Original Papers
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