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Design and analysis of a full bridge LLC DC-DC converter for auxiliary power supplies in traction

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Abstract

This paper focuses on an 8 kW LLC resonant full bridge DC-DC converter topology using a high frequency transformer for auxiliary power supply systems in traction. The full bridge DC-DC converter with the LLC resonant network has been tested under hard switching and zero current switching conditions with 100 kHz switching frequency. In addition to this, an observation made for the effect of dead time variation of the power switches to improve the overall system efficiency. This paper describes the efficiency of the ZCS full bridge converter by considering different input power levels and also compared with hard switched topology. This paper presents the operating principles, simulation analysis, and experimental verification for 3 kW to 8 kW LLC resonant full bridge converter with 1200 V/40 A IGBTs, and its efficiency comparison.

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Acknowledgements

This research has been supported by the Ministry of Education, Youth and Sports of the Czech Republic under the Regional Innovation Centre for Electrical Engineering – New Technologies and Concepts for Smart Industrial Systems, Project No. LO1607.

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Authors and Affiliations

  1. School of Electronics Engineering, Kalinga Institute of Industrial Technology Unversity, Bhubaneswar, 751024, India

    Veera Venkata Subrahmanya Kumar Bhajana

  2. Regional Innovation Centre for Electrical Engineering, University of West Bohemia, Univerzitni 26, 30614, Pilsen, Czech Republic

    Pavel Drabek & Martin Jara

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  1. Veera Venkata Subrahmanya Kumar Bhajana
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  2. Pavel Drabek
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  3. Martin Jara
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Correspondence to Veera Venkata Subrahmanya Kumar Bhajana.

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Bhajana, V.V.S.K., Drabek, P. & Jara, M. Design and analysis of a full bridge LLC DC-DC converter for auxiliary power supplies in traction. Sādhanā 43, 95 (2018). https://doi.org/10.1007/s12046-018-0856-4

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  • DOI: https://doi.org/10.1007/s12046-018-0856-4

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