Discrete Inductor Free Phase Shifted Dual Active Bridge Converter for EV DC Fast Charging Application
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Yao, W
Lu, J
Zhu, Y
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Brisbane, Australia
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Abstract
This paper studies a compact dual active bridge (DAB) converter by adopting a latest high-frequency transformer (HFT). Traditional DAB converter requires the discrete inductor to perform the energy transfer operation, which increases the overall size, volume, and cost of the design. The investigated DAB structure removes the discrete inductor due to the sufficient inherent leakage inductance from the HFT for phase shift-DAB converter operation. The HFT model has been recently designed and tested for high voltage and high power under the ongoing transformer design research project. Following that the potential of high voltage and high power DAB design has been investigated in this work. The high-frequency operation of the chosen HFT (100 kHz) enables the utilization of the wide band gap silicon carbide (SiC) semiconductors. Finally, the simulation for the 11 kW system has been performed based on the experimental data of the adopted 11 kW HFT in PLECS software and the performance of the DAB converter has been examined successfully.
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2024 IEEE 9th Southern Power Electronics Conference (SPEC)
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Subhani, N; Yao, W; Lu, J; Zhu, Y, Discrete Inductor Free Phase Shifted Dual Active Bridge Converter for EV DC Fast Charging Application, 2024 IEEE 9th Southern Power Electronics Conference (SPEC), 2025