Efficiency and Cost Optimization of Dual Active Bridge Converter for 350kW DC Fast Chargers
Systems and Control
2026-05-26 v2 Systems and Control
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.
Keywords
Cite
@article{arxiv.2404.14557,
title = {Efficiency and Cost Optimization of Dual Active Bridge Converter for 350kW DC Fast Chargers},
author = {Sadik Cinik and Fangzhou Zhao and Giuseppe De Falco and Xiongfei Wang},
journal= {arXiv preprint arXiv:2404.14557},
year = {2026}
}