Battery Management System Performance Enhancement using Charge Equalization Controller Design | ||
| Menoufia Journal of Electronic Engineering Research | ||
| Article 6, Volume 31, Issue 2, July 2022, Pages 55-63 PDF (1.41 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/mjeer.2022.109809.1044 | ||
| Authors | ||
| Ali Sallam* 1; Abdel-azim Sopieh2; Essam Nabil3 | ||
| 1dept. of industrial electronics and control, Faculty of electronic engineering in Menouf, Menoufia University, Egypt, | ||
| 2Industrial electronics and control department, Faculty of electronic engineering, Menoufia University, Menouf Egypt. | ||
| 3Department 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 | ||
| Fuzzy logic control; Sliding mode control; Charge equalization controller; State of charge; Li-ion Battery | ||
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