Impact of the Transformer Magnetizing Inductance on the Performance of the Dual-Active Bridge Converter

Conference · Mon Nov 01 00:00:00 EDT 2021

DOI:https://doi.org/10.1109/COMPEL52922.2021.9645978· OSTI ID:1855667

Yin, Shiyuan ^[1]; Debnath, Suman  ^[1]; Wojda, Rafal  ^[1]; Marthi, Phani Ratna Vanamali  ^[1]; Saeedifard, Maryam ^[2]

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1. ORNL
2. Georgia Institute of Technology, Atlanta

The magnetizing inductance of the high-frequency transformer in the dual-active bridge (DAB) converter is usually assumed to be much larger than its leakage inductance, thereby the magnetizing current can be negligible. However, ignoring the magnetizing current will lead to an error in the DAB converter design process. This paper analyzes the operation and performance of the DAB converter for a general case in which the transformer magnetizing inductance is taken into consideration. The analysis shows that the magnetizing inductance impacts the soft-switching region, the power transfer capability, and the leakage inductor current. A simulation case study is provided to verify the analysis. A DAB converter prototype is built to experimentally validate the analysis as well.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1855667
• Resource Relation: Conference: IEEE COMPEL - Virtual, Tennessee, United States of America - 11/2/2021 4:00:00 AM-
• Country of Publication: United States
• Language: English