Average Model of Switched-Energy-Tank Battery Equalizer for Accelerated Performance Assessment

Assessing the performance of active balancing methods poses a significant challenge due to the time required to replicate the equalization of various balancing techniques under identical initial cell conditions. Conventional circuit simulation methods, designed for high-frequency switching behavior,...

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Bibliographic Details
Published inEnergies (Basel) Vol. 17; no. 3; p. 631
Main Authors La, Phuong-Ha, Nguyen, Nguyen-Anh, Choi, Sung-Jin
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.01.2024
Subjects
Analysis
average model
Batteries
battery equalizer
charge exchange mechanism
Control algorithms
Energy storage
long-term equalizing simulation
Simulation
Simulation methods
switched-energy-tank equalizer
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Summary:Assessing the performance of active balancing methods poses a significant challenge due to the time required to replicate the equalization of various balancing techniques under identical initial cell conditions. Conventional circuit simulation methods, designed for high-frequency switching behavior, impose a considerable computational burden when applied to the long-term equalization of battery cells. To address this challenge, this paper presents an efficient performance evaluation method employing an average equivalent model of the equalizers. By representing the charge transfer mechanism inherent to the equalization process, the proposed approach is compatible with the most widely used switched-energy-tank equalizers. The validity of this method is confirmed through simulation and experimental results. In the case of four series-connected battery cells, our proposed approach can assess the performance of a three-hour equalization process in just one minute of execution time. The use cases in the paper highlight the practical feasibility of the AM in facilitating performance comparisons of SET-Es under various initial conditions.
ISSN:1996-1073
1996-1073
DOI:10.3390/en17030631