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Evaluation of a Three-Phase Bidirectional Isolated DC-DC Converter with Varying Transformer Configurations Using Phase-Shift Modulation and Burst-Mode Switching

Author

Listed:
  • Nuraina Syahira Mohd Sharifuddin

    (Department of Electrical and Electronics Engineering, Universiti Tenaga Nasional, Kajang 43000, Malaysia)

  • Nadia M. L. Tan

    (Department of Electrical and Electronics Engineering, Universiti Tenaga Nasional, Kajang 43000, Malaysia
    Institute of Power Engineering, Universiti Tenaga Nasional, Kajang 43000, Malaysia)

  • Hirofumi Akagi

    (Innovator and Inventor Development Platform, Tokyo Institute of Technology, Yokohama 226-8502, Japan)

Abstract

This paper presents the performance of a three-phase bidirectional isolated DC-DC converter (3P-BIDC) in wye-wye (Yy), wye-delta (Yd), delta-wye (Dy), and delta-delta (Dd) transformer configurations, using enhanced switching strategy that combines phase-shift modulation and burst-mode switching. A simulation verification using PSCAD is carried out to study the feasibility and compare the efficiency performance of the 3P-BIDC with each transformer configuration, using intermittent switching, which combines the conventional phase-shift modulation (PSM) and burst-mode switching, in the light load condition. The model is tested with continuous switching that employs the conventional PSM from medium to high loads (greater than 0.3 p.u.) and with intermittent switching at light load (less than 0.3 p.u), in different transformer configurations. In all tests, the DC-link voltages are equal to the transformer turns ratio of 1:1. This paper also presents the power loss estimation in continuous and intermittent switching to verify the modelled losses in the 3P-BIDC in the Yy transformer configuration. The 3P-BIDC is modelled by taking into account the effects that on-state voltage drop in the insulated-gate bipolar transistor (IGBTs) and diodes, snubber capacitors, and three-phase transformer copper winding resistances will have on the conduction and switching losses, and copper losses in the 3P-BIDC. The intermitting switching improves the efficiency of the DC-DC converter with Yy, Yd, Dy, and Dd connections in light-load operation. The 3P-BIDC has the best efficiency performance using Yy and Dd transformer configurations for all power transfer conditions in continuous and intermittent switching. Moreover, the highest efficiency of 99.6% is achieved at the light power transfer of 0.29 p.u. in Yy and Dd transformer configurations. However, the theoretical current stress in the 3P-BIDC with a Dd transformer configuration is high. Operation of the converter with Dy transformer configuration is less favorable due to the efficiency achievements of lower than 95%, despite burst-mode switching being applied.

Suggested Citation

  • Nuraina Syahira Mohd Sharifuddin & Nadia M. L. Tan & Hirofumi Akagi, 2020. "Evaluation of a Three-Phase Bidirectional Isolated DC-DC Converter with Varying Transformer Configurations Using Phase-Shift Modulation and Burst-Mode Switching," Energies, MDPI, vol. 13(11), pages 1-20, June.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:11:p:2836-:d:366542
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    References listed on IDEAS

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    1. Duy-Dinh Nguyen & Ngoc-Tam Bui & Kazuto Yukita, 2019. "Design and Optimization of Three-Phase Dual-Active-Bridge Converters for Electric Vehicle Charging Stations," Energies, MDPI, vol. 13(1), pages 1-17, December.
    2. 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.
    3. P. Sathishkumar & T. N. V. Krishna & Himanshu & Muhammad Adil Khan & Kamran Zeb & Hee-Je Kim, 2018. "Digital Soft Start Implementation for Minimizing Start Up Transients in High Power DAB-IBDC Converter," Energies, MDPI, vol. 11(4), pages 1-18, April.
    4. Mariam Saeed & María R. Rogina & Alberto Rodríguez & Manuel Arias & Fernando Briz, 2020. "SiC-Based High Efficiency High Isolation Dual Active Bridge Converter for a Power Electronic Transformer," Energies, MDPI, vol. 13(5), pages 1-18, March.
    5. Tao Lei & Cenying Wu & Xiaofei Liu, 2018. "Multi-Objective Optimization Control for the Aerospace Dual-Active Bridge Power Converter," Energies, MDPI, vol. 11(5), pages 1-21, May.
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    Cited by:

    1. Salvatore Musumeci, 2022. "Special Issue “Advanced DC-DC Power Converters and Switching Converters”," Energies, MDPI, vol. 15(4), pages 1-5, February.

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