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Fast Transient Modulation for a Step Load Change in a Dual-Active-Bridge Converter with Extended-Phase-Shift Control

Author

Listed:
  • Chuan Sun

    (Faculty of Information Technology, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau SAR 999078, China)

  • Xiaodong Li

    (Faculty of Information Technology, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau SAR 999078, China)

Abstract

The manipulation of the bidirectional power in a dual-active-bridge converter relies on the adjustment of several phase-shift angles. Improper implementation of those adjustments during the transient process of a step load change may induce transient DC bias current in the transformer and accompanied high peak current, which may result in excess loss and safety issues potentially. The paper proposes a load transient modulation to execute the adjustments of the two phase-shift angles for extended-phase-shift (EPS) control in a predictive manner. An unknown phase-shift is introduced to the gating signals of one bridge arm, and the gating signals of other bridge arms would be modified accordingly to realize the required adjustment of the two phase-shift angles together. With the proper selection of the introduced phase-shift, the power adjustment can be done in less than one high-frequency cycle without resulting in DC bias and overshoot current. Although there are four different operation modes existing in EPS, a universal solution of the unknown phase-shift can be obtained for all possible power transition cases between different modes. Validation of the proposed method is performed by means of both simulation and experimental tests.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:6:p:1569-:d:152605
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    References listed on IDEAS

    as
    1. 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.
    2. 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.
    3. Xiaolong Shi & Jiuchun Jiang & Xintao Guo, 2012. "An Efficiency-Optimized Isolated Bidirectional DC-DC Converter with Extended Power Range for Energy Storage Systems in Microgrids," Energies, MDPI, vol. 6(1), pages 1-18, December.
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    Cited by:

    1. Carlos Calderon & Andres Barrado & Alba Rodriguez & Pedro Alou & Antonio Lazaro & Cristina Fernandez & Pablo Zumel, 2018. "General Analysis of Switching Modes in a Dual Active Bridge with Triple Phase Shift Modulation," Energies, MDPI, vol. 11(9), pages 1-23, September.
    2. Duong Tran & Nam Vu & Woojin Choi, 2018. "A Quasi-Resonant ZVZCS Phase-Shifted Full-Bridge Converter with an Active Clamp in the Secondary Side," Energies, MDPI, vol. 11(11), pages 1-21, October.

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