A New Topology of Multi-Input Bidirectional DC-DC Converters for Hybrid Energy Storage Systems

Simone Cosso, Alessandro Benevieri, Mario Marchesoni (), Massimiliano Passalacqua, Luis Vaccaro and Paolo Pozzobon
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Simone Cosso: Department of Electrical, Electronic, Tlc Engineering and Naval Architecture (DITEN), University of Genova, Via All’Opera Pia 11a, 16145 Genova, Italy
Alessandro Benevieri: Department of Electrical, Electronic, Tlc Engineering and Naval Architecture (DITEN), University of Genova, Via All’Opera Pia 11a, 16145 Genova, Italy
Mario Marchesoni: Department of Electrical, Electronic, Tlc Engineering and Naval Architecture (DITEN), University of Genova, Via All’Opera Pia 11a, 16145 Genova, Italy
Massimiliano Passalacqua: Department of Electrical, Electronic, Tlc Engineering and Naval Architecture (DITEN), University of Genova, Via All’Opera Pia 11a, 16145 Genova, Italy
Luis Vaccaro: Department of Electrical, Electronic, Tlc Engineering and Naval Architecture (DITEN), University of Genova, Via All’Opera Pia 11a, 16145 Genova, Italy
Paolo Pozzobon: Department of Electrical, Electronic, Tlc Engineering and Naval Architecture (DITEN), University of Genova, Via All’Opera Pia 11a, 16145 Genova, Italy

Energies, 2024, vol. 17, issue 20, 1-13

Abstract: A new topology of multi-input bidirectional DC-DC converters is proposed in this paper. The converter has a boost behavior, i.e., the output voltage is higher than the sum of the input voltages. This family of converters is particularly suited for hybrid energy storage systems, where different DC sources are connected together and where the output voltage is significantly higher than the voltage of a single storage. The proposed converter reduces the number of required switches, leading to higher efficiency and reduced complexity compared to traditional n -input converters. The new topology demonstrates superior performance by enabling higher efficiency with fewer components. A dedicated control, based on PI controllers, is provided to ensure stable operation under dynamic conditions. The effectiveness of the proposed solution is tested using experimental results on a four-input 20 A/100 V converter prototype.

Keywords: hybrid electric vehicle (HEV); hybrid energy storage system (HESS); DC-DC converter; multi-input topology (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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