Multibattery charger system based on a multilevel dual-active-bridge power converter
This work introduces a novel battery charger implemented with a four-level three-phase neutral-point-clamped converter and a four-level single-phase dual-activebridge converter, which offers the intrinsic advantages of multilevel conversion, provides galvanic isolation and allows bidirectional power...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/429820 |
| Acceso en línea: | https://hdl.handle.net/2117/429820 https://dx.doi.org/10.3390/electronics14081659 |
| Access Level: | acceso abierto |
| Palabra clave: | DC-link voltage balancing Four-level battery charger Multibattery charging system Àrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència |
| Sumario: | This work introduces a novel battery charger implemented with a four-level three-phase neutral-point-clamped converter and a four-level single-phase dual-activebridge converter, which offers the intrinsic advantages of multilevel conversion, provides galvanic isolation and allows bidirectional power flow. A detailed and extensive modeling of the system is developed, together with the design of appropriate closed-loop control and modulation. The proposed system allows individual charging of each battery pack, ensuring that the full capacity of the battery bank is utilized, even when the battery packs have different state-of-charge levels, differ in nominal capacities, or use different chemistries. Furthermore, the proposed control system manages the overall DC-link voltage and ensures voltage balance across both DC-links in the system. The effectiveness of the proposed system configuration and control has been validated through simulations. The simulation results show good dynamic response in different operating scenarios, confirming the suitability, feasibility, and benefits of the proposed implementation and control approach. |
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