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Energies 2019, 12(2), 221; https://doi.org/10.3390/en12020221

Design and Analysis of Non-Isolated Three-Port SEPIC Converter for Integrating Renewable Energy Sources

1
Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Kancheepuram District, Tamilnadu PIN-603203, India
2
NFTDC, Hyderabad, Telangana PIN-500059, India
*
Author to whom correspondence should be addressed.
Received: 26 November 2018 / Revised: 4 January 2019 / Accepted: 7 January 2019 / Published: 11 January 2019
(This article belongs to the Special Issue Power Electronics in Renewable Energy Systems)

Abstract

An efficient way of synthesizing a three port non-isolated converter from a single-ended primary inductor converter (SEPIC) is proposed in this paper. The primary SEPIC converter is split into a source cell and a load cell. Two such source cells are integrated through direct current (DC) link capacitors with a common load cell to generate a three-port SEPIC converter. The derived converter features single-stage power conversion with reduced structural complexity and bidirectional power flow capability. For bidirectional power flow, it incorporates a battery along with an auxiliary photovoltaic source. Mathematical analyses were carried out to describe the operating principles and design considerations. Experiments were performed on an in-house-built prototype three-port unidirectional converter, and the results are presented to validate the feasibility of the designed converter. View Full-Text
Keywords: multiport converter (MPC); single ended primary inductor converter (SEPIC); multi-input single output (MISO); renewable power system multiport converter (MPC); single ended primary inductor converter (SEPIC); multi-input single output (MISO); renewable power system
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Anuradha, C.; Chellammal, N.; Saquib Maqsood, M.; Vijayalakshmi, S. Design and Analysis of Non-Isolated Three-Port SEPIC Converter for Integrating Renewable Energy Sources. Energies 2019, 12, 221.

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