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Comparative Stability Study of a Dual Active Bridge-Based Battery Charger with Advanced Modulation Schemes
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| Author(s) |
Martin SCOHIER, Olivier DEBLECKER, Bashir BAKHSHIDEH ZAD |
| Abstract |
Thanks to their galvanic isolation and bidirectional power transfer features, the Dual Active Bridge (DAB) converters can offer a promising solution for interconnecting battery chargers to emerging DC grid applications. When cascaded with LC filters, the charger stability can be affected by the impedance interactions caused by the closed-loop charging process. This is exacerbated by the wide range of operating points in terms of DC voltages as well as the numerous Modulation Schemes (MS). To address this, the current paper extends the averaged small-signal model to the case of a Constant Current Constant Voltage (CC-CV) charging process. A stability analysis method is proposed to compare Single, Extended, Dual and Triple Phase Shift MS during a charging cycle. Simulation results validate the proposed models and highlight the flaws of advanced MS under varying operating conditions. |
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| Filename: | 0175-epe2025-full-19475052.pdf |
| Filesize: | 3.191 MB |
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| Type |
Members Only |
| Date |
Last modified 2025-08-31 by System |
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