Ripple current control for single phase-shift dual active bridge converters

Authors

  • Sz. Veréb Department of Automation and Applied Informatics Faculty of Electrical Engineering and Informatics Budapest University of Technology and Economics M˝uegyetem rkp. 3., H-1111 Budapest (Hungary) Author
  • L. Stranyóczky Department of Automation and Applied Informatics Faculty of Electrical Engineering and Informatics Budapest University of Technology and Economics M˝uegyetem rkp. 3., H-1111 Budapest (Hungary) Author
  • Z. Süto Department of Automation and Applied Informatics Faculty of Electrical Engineering and Informatics Budapest University of Technology and Economics M˝uegyetem rkp. 3., H-1111 Budapest (Hungary) Author
  • A. Balogh Department of Automation and Applied Informatics Faculty of Electrical Engineering and Informatics Budapest University of Technology and Economics M˝uegyetem rkp. 3., H-1111 Budapest (Hungary) Author

DOI:

https://doi.org/10.52152/3970

Keywords:

dual active bridge, ripple current, single phase-shift

Abstract

Nowadays, the need for isolated bidirectional DC/DC converters is growing. In these types of equipment, the dual active bridge topology is widespread, where mostly the trans- former leakage inductance value determines its dynamic behavior. Voltage imbalance between the primary and secondary side results in unwanted excessive transformer peak current if the leakage in- ductance is low, thus limiting the load transient response of the converter. In this paper, a ripple current control method is pre- sented, which reduces the transformer peak current to its minimal level, furthermore, allows the magnetizing current components to be distributed between the primary and secondary sides in an ar- bitrary proportion. The proposed control was tested in HIL sim- ulation and on a real 360kW dual active bridge converter. Based on the results the current stress on semiconductors and DC capac- itors were reduced while the utilization and the efficiency of the converter were increased.

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Published

2024-08-03

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Section

Articles