Buck-Boost Converter-based Active Cell Balancing Circuit : Based on Balancing Index Analysis

Key Points

• The aim is to develop a buck-boost converter-based active cell balancing circuit using a balancing index for efficient energy transfer.
• Implemented a three-cell model using MATLAB/Simulink.
• Switched between buck and boost modes based on the state of charge (SOC).
• Analyzed the impact of the balancing index (BI) on performance.
• Utilized linear regression and boosting algorithms to enhance BI prediction accuracy.
• Confirmed that R1 significantly affects balancing performance.
• Achieved successful bidirectional energy transfer between cells.
• Demonstrated potential for performance improvement in electric vehicles (EV), energy storage systems (ESS), and unmanned aerial vehicles (UAV).