Design and Analysis of an Isolated Bidirectional Dual Active Bridge (DAB) DC-DC Converter with Battery to Grid Capability

  • Unique Paper ID: 203957
  • Volume: 13
  • Issue: 1
  • PageNo: 2179-2186
  • Abstract:
  • Bidirectional power transfer is essential in emerging electric vehicle charging and distributed battery storage systems, where energy must be exchanged between a high-voltage DC supply and a battery. An isolated Dual Active Bridge (DAB) DC-DC converter is developed and evaluated to enable this bidirectional operation through phase-shift modulation between the primary and secondary full bridges. A concise analytical model is formulated using standard DAB power-phase and inductor-voltage relations to describe the behavior of Grid-to-Battery (G2B) and Battery-to-Grid (B2G) modes. The model is implemented in MATLAB/Simulink using practical parameters, including an 800 V DC input, a 500 V transformer output and a 450 V battery interface at a switching frequency of 100 kHz. The simulation demonstrates stable and controllable power flow in both directions, achieving approximately 10 kW transfer at a phase shift of 22.5° with accurate current polarity and waveform shape. The work provides a clear operational understanding of phase-shift control, bidirectional current behavior, and mode transition in DAB converters, supporting their use in EV-charging infrastructure, battery-energy storage systems, and B2G applications.

Copyright & License

Copyright © 2026 Authors retain the copyright of this article. This article is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

BibTeX

@article{203957,
        author = {Soham Gandhi and Ramchandra Kunale and Penam Borkar and Om Gundawar and Dr. Pabitra Guchhait},
        title = {Design and Analysis of an Isolated Bidirectional Dual Active Bridge (DAB) DC-DC Converter with Battery to Grid Capability},
        journal = {International Journal of Innovative Research in Technology},
        year = {2026},
        volume = {13},
        number = {1},
        pages = {2179-2186},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=203957},
        abstract = {Bidirectional power transfer is essential in emerging electric vehicle charging and distributed battery storage systems, where energy must be exchanged between a high-voltage DC supply and a battery. An isolated Dual Active Bridge (DAB) DC-DC converter is developed and evaluated to enable this bidirectional operation through phase-shift modulation between the primary and secondary full bridges. A concise analytical model is formulated using standard DAB power-phase and inductor-voltage relations to describe the behavior of Grid-to-Battery (G2B) and Battery-to-Grid (B2G) modes. The model is implemented in MATLAB/Simulink using practical parameters, including an 800 V DC input, a 500 V transformer output and a 450 V battery interface at a switching frequency of 100 kHz. The simulation demonstrates stable and controllable power flow in both directions, achieving approximately 10 kW transfer at a phase shift of 22.5° with accurate current polarity and waveform shape. The work provides a clear operational understanding of phase-shift control, bidirectional current behavior, and mode transition in DAB converters, supporting their use in EV-charging infrastructure, battery-energy storage systems, and B2G applications.},
        keywords = {Dual Active Bridge (DAB), High-Frequency Transformer, Bidirectional DC-DC Converter, Battery-to-Grid (B2G), Phase-Shift Modulation},
        month = {June},
        }

Cite This Article

Gandhi, S., & Kunale, R., & Borkar, P., & Gundawar, O., & Guchhait, D. P. (2026). Design and Analysis of an Isolated Bidirectional Dual Active Bridge (DAB) DC-DC Converter with Battery to Grid Capability. International Journal of Innovative Research in Technology (IJIRT), 13(1), 2179–2186.

Related Articles