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arXiv · 2404.14557

Efficiency and Cost Optimization of Dual Active Bridge Converter for 350kW DC Fast Chargers

Sadik Cinik·Fangzhou Zhao·Giuseppe De Falco·Xiongfei Wang
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Abstract

This study focuses on optimizing the design parameters of a Dual Active Bridge (DAB) converter for use in 350 kW DC fast chargers, emphasizing the balance between efficiency and cost. Addressing the observed gaps in existing high-power application research, it introduces an optimization framework to evaluate critical design parameters,number of converter modules, switching frequency, and transformer turns ratio,within a broad operational voltage range. The analysis identifies an optimal configuration that achieves over 95% efficiency at rated power across a wide output voltage range, comprising seven 50 kW DAB converters with a switching frequency of 30 kHz, and a transformer turns ratio of 0.9.

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Sadik Cinik, Fangzhou Zhao, Giuseppe De Falco, Xiongfei Wang. 2024-04-22. Efficiency and Cost Optimization of Dual Active Bridge Converter for 350kW DC Fast Chargers. https://doi.org/10.1109/ecceeurope62508.2024.10752065

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