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State-of-energy balancing control with cascaded H-bridge for second-life batteries

J. Suárez Porras, D.I. Stroe, A. Sangwongwanich

IEEE Applied Power Electronics Conference and Exposition - APEC 2023, Orlando (Estados Unidos de América). 19-23 marzo 2023


Resumen:

Battery energy storage systems (BESS) are fre-quently utilized to support the power grid. Second-Life batteries (SLBs) are considered as a potential solution to reduce the cost of BESS in stationary applications. However, using SLBs has certain challenges due to the non-uniform State-of-Charge (SOC) and State-of-Health (SOH) among the battery modules. This study examines two control strategies for a cascaded H-bridge (CHB) topology used for BESS applications. The possibilities for flexible control of the BESS are enabled by employing a CHB topology. By utilizing the CHB topology, each battery module can be individually charged and discharged. Two battery energy management system (BEMS) techniques are proposed based on the batteries' State-of-Energy (SOE): 1) continuous and 2) discrete balancing techniques. The experimental tests demonstrate the advantages of the proposed solutions in terms of individual balancing control when being applied to SLB.


Resumen divulgativo:

Las baterías de segunda vida se están convirtiendo en un medio de almacenamiento de energía en áreas residenciales. Sin embargo, su uso tiene inconvenientes debido a los diferentes estados de las baterías. Este estudio examina dos estrategias de control para la segunda vida útil de baterías.


Palabras clave: Second-Life batteries, Cascaded H-Bridge, State-of-Energy, battery balancing.


DOI: DOI icon https://doi.org/10.1109/APEC43580.2023.10131402

Fecha de publicación: marzo 2023.



Cita:
Suárez Porras, J., Stroe, D.I., Sangwongwanich, A., State-of-energy balancing control with cascaded H-bridge for second-life batteries, IEEE Applied Power Electronics Conference and Exposition - APEC 2023, Orlando (Estados Unidos de América). 19-23 marzo 2023.


    Líneas de investigación:
  • Electrónica de potencia

IIT-23-114C

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