SINGLE INDUCTOR THREE-PORT CONVERTER FOR WIDE INPUT RANGE

Gao Shengwei; Wang Zhao; Sun Xingtao

doi:10.19912/j.0254-0096.tynxb.2024-0511

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (8) : 299-308. DOI: 10.19912/j.0254-0096.tynxb.2024-0511

SINGLE INDUCTOR THREE-PORT CONVERTER FOR WIDE INPUT RANGE

Gao Shengwei^1,2, Wang Zhao^1,2, Sun Xingtao^1,2

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Abstract

To address the problem of unstable output voltage of photovoltaic （PV） module, a single inductor non-isolated three-port converter with wide input voltage range is proposed. The energy flow and power distribution among the three ports can be achieved through control strategies.The proposed converter is based on a four-switch Buck-Boost （FSBB） converter obtained by combining the direct construction method and the multi-input port construction method. The structure of the PV module ports and the energy storage ports in series breaks the limitation of the traditional time-sharing strategy, which can further broaden the operating range of the converter, and also simplifies the controller design of the three-port converter due to the structural characteristics. Finally, an experimental prototype is designed for the proposed topology, and the correctness of the theoretical analysis of the converter and the feasibility of its operation in real PV modules are verified through experiments.

Key words

DC-DC converter / Buck-Boost converter / energy management / three-port converter / single inductor / wide input range / series structure

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Gao Shengwei, Wang Zhao, Sun Xingtao. SINGLE INDUCTOR THREE-PORT CONVERTER FOR WIDE INPUT RANGE[J]. Acta Energiae Solaris Sinica. 2025, 46(8): 299-308 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0511

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