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Design and Optimization of an Efficient (96.1%) and Compact (2 kW/dm3) Bidirectional Isolated Single-Phase Dual Active Bridge AC-DC Converter

Author

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  • Jordi Everts

    (Department of Electrical Engineering, Electromechanics and Power Electronics (EPE) Group, Eindhoven University of Technology (TU/e), Postbox 513, 5600 MB Eindhoven, The Netherlands)

Abstract

The growing attention on plug-in electric vehicles, and the associated high-performance demands, have initiated a development trend towards highly efficient and compact on-board battery chargers. These isolated ac-dc converters are most commonly realized using two conversion stages, combining a non-isolated power factor correction (PFC) rectifier with an isolated dc-dc converter.This, however, involves two loss stages and a relatively high component count, limiting the achievable efficiency and power density and resulting in high costs. In this paper, a single-stage converter approach is analyzed to realize a single-phase ac-dc converter, combining all functionalities into one conversion stage and thus enabling a cost-effective efficiency and power density increase. The converter topology consists of a quasi-lossless synchronous rectifier followed by an isolated dual active bridge (DAB) dc-dc converter, putting a small filter capacitor in between. To show the performance potential of this bidirectional, isolated ac-dc converter, a comprehensive design procedure and multi-objective optimization with respect to efficiency and power density is presented, using detailed loss and volume models. The models and procedures are verified by a 3.7kW hardware demonstrator, interfacing a 400Vdc-bus with the single-phase 230V,50Hz utility grid. Measurement results indicate a state-of-the-art efficiency of 96.1% and power density of 2 kW/dm3, confirming the competitiveness of the investigated single-stage DAB ac-dc converter.

Suggested Citation

  • Jordi Everts, 2016. "Design and Optimization of an Efficient (96.1%) and Compact (2 kW/dm3) Bidirectional Isolated Single-Phase Dual Active Bridge AC-DC Converter," Energies, MDPI, vol. 9(10), pages 1-40, October.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:10:p:799-:d:79810
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    References listed on IDEAS

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    1. Yen-Ching Wang & Fu-Ming Ni & Tzung-Lin Lee, 2016. "Hybrid Modulation of Bidirectional Three-Phase Dual-Active-Bridge DC Converters for Electric Vehicles," Energies, MDPI, vol. 9(7), pages 1-13, June.
    2. Song Hu & Xiaodong Li & Ming Lu & Bo-Yue Luan, 2015. "Operation Modes of a Secondary-Side Phase-Shifted Resonant Converter," Energies, MDPI, vol. 8(11), pages 1-17, October.
    3. Ying Fan & Weixia Zhu & Zhongbing Xue & Li Zhang & Zhixiang Zou, 2015. "A Multi-Function Conversion Technique for Vehicle-to-Grid Applications," Energies, MDPI, vol. 8(8), pages 1-16, July.
    4. Aiswariya Sekar & Dhanasekaran Raghavan, 2015. "Implementation of Single Phase Soft Switched PFC Converter for Plug-in-Hybrid Electric Vehicles," Energies, MDPI, vol. 8(11), pages 1-16, November.
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    Cited by:

    1. Chuan Sun & Xiaodong Li, 2018. "Fast Transient Modulation for a Step Load Change in a Dual-Active-Bridge Converter with Extended-Phase-Shift Control," Energies, MDPI, vol. 11(6), pages 1-22, June.
    2. Piotr Dworakowski & Andrzej Wilk & Michal Michna & Bruno Lefebvre & Fabien Sixdenier & Michel Mermet-Guyennet, 2020. "Effective Permeability of Multi Air Gap Ferrite Core 3-Phase Medium Frequency Transformer in Isolated DC-DC Converters," Energies, MDPI, vol. 13(6), pages 1-21, March.
    3. Dante Ruiz-Robles & Vicente Venegas-Rebollar & Adolfo Anaya-Ruiz & Edgar L. Moreno-Goytia & Juan R. Rodríguez-Rodríguez, 2018. "Design and Prototyping Medium-Frequency Transformers Featuring a Nanocrystalline Core for DC–DC Converters," Energies, MDPI, vol. 11(8), pages 1-17, August.

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