Abstract
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.
| Original language | English |
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| Title of host publication | 2021 IEEE 22nd Workshop on Control and Modelling of Power Electronics, COMPEL 2021 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781665436359 |
| DOIs | |
| State | Published - 2021 |
| Event | 22nd IEEE Workshop on Control and Modelling of Power Electronics, COMPEL 2021 - Cartagena, Colombia Duration: Nov 2 2021 → Nov 5 2021 |
Publication series
| Name | 2021 IEEE 22nd Workshop on Control and Modelling of Power Electronics, COMPEL 2021 |
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Conference
| Conference | 22nd IEEE Workshop on Control and Modelling of Power Electronics, COMPEL 2021 |
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| Country/Territory | Colombia |
| City | Cartagena |
| Period | 11/2/21 → 11/5/21 |
Funding
Research sponsored by Solar Energy Technologies Office of U.S. Department of Energy. This material is based upon work supported by the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) under the Solar Energy Technologies Office Award Number 34019. The views expressed herein do not necessarily represent the views of the U.S. Department of Energy or the United States Government.
Keywords
- DAB
- Dual-active bridge converter
- Magnetizing inductance
- Modeling
- Soft-switching