Battery Management System Performance Enhancement using Charge Equalization Controller Design

Document Type : Original Article

Authors

1 dept. of industrial electronics and control, Faculty of electronic engineering in Menouf, Menoufia University, Egypt,

2 Industrial electronics and control department, Faculty of electronic engineering, Menoufia University, Menouf Egypt.

3 Department of Industrial Electronics and Control Engineering, Faculty of Electronic Engineering, Menoufia University, Menouf, Menoufia, Egypt

Abstract

A precision model of a battery charge equalization controller (BCEC) is developed in this research paper to control a series-connected Li-ion battery with a number of cells (n). The BCEC's main task is to manage each cell individually with monitoring and balancing all cells by charging the over-discharged cell or discharging the overcharged one. An intelligent fuzzy logic controller (FLC) and a single sliding mode controller (SSMC) are evolved to activate bidirectional cell switches and regulate a chopper circuit's direct current (DC-DC flyback converter) with PWM generation. The model can be implemented in electric vehicle (E.V.) applications to get benefit from the Li-ion battery. It consists of individual models of an E.V., cells of Li-ion battery, a fly-back converter, and a charge equalization controller for charging and discharging are integrated with n series-connected cells of Li-ion battery. The simulation results confirm that the proposed schemes have achieved enhanced performance with balancing the Li-ion cells as the state of charge difference between cells is maintained to be 0.1% while maintaining the battery operation with a safe region. The BCEC is compared with the existing controllers based on efficiency, power losses, performance, and cost and has achieved better results.

Keywords

Main Subjects

Files

Share

How to cite

Statistics