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Improved estimation of battery equivalent resistance in bidirectional EV chargers
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| Author(s) |
Mohammad Sadegh BAGHAEI NANE KARAN, Zohra KADER, Maurice FADEL, Jerome LACHAIZE |
| Abstract |
This paper presents an analysis and modelling approach for bidirectional CLLLC resonant converters, addressing limitations in conventional methods like the First Harmonic Approximation (FHA). The proposed methodology based on Extended Harmonic Analysis (EHA) allows a dynamical estimation of a battery equivalent resistance across varying frequency and voltage ranges. The precision of gain characterization and performance are improved using the proposed method. MATLAB Simulink simulations validate the proposed EHA method, demonstrating significant improvements in prediction accuracy and power transfer efficiency. Compared to FHA, the EHA method reduces modelling errors by up to 78\%. |
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| Filename: | 0341-epe2025-full-23413101.pdf |
| Filesize: | 1005 KB |
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| Type |
Members Only |
| Date |
Last modified 2025-08-31 by System |
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