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Zero-Voltage-Switching Analysis Model of the Triple-Active-Bridge Converter

Author

Listed:
  • Hyung-Jun Byun

    (Department of Electrical and Computer Engineering, College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea)

  • Jung-Min Park

    (Industrial Standards Division Electrical Standards Center, Korea Testing Laboratory (KTL), Ansan-si 15588, Republic of Korea)

  • Junsin Yi

    (Department of Electrical and Computer Engineering, College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea)

  • Chung-Yuen Won

    (Department of Electrical and Computer Engineering, College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea)

Abstract

This study aims to analyze the zero-voltage-switching (ZVS) region of a Triple-Active-Bridge (TAB) converter with five degrees of freedom. A TAB converter is an isolated converter derived from a dual-active-bridge (DAB) converter and composed of three full bridges (FBs) coupled to three winding transformers. To reduce the switching loss of the 12 active switches that compose 3 FBs, the ZVS operation is essential. However, owing to the numerous operation modes derived by five-phase shift ratios, ZVS analysis is complicated, particularly in the time domain. Therefore, this study presents the ZVS analysis model of the TAB converter based on the generalized harmonic approximation (GHA). Through the GHA of a TAB converter, the proposed model consists of unified formulas applicable to all operating ranges of the converter. Unified formulas consider all parameters, such as series inductance, port voltage, parasitic capacitance, transformer voltage, and turn ratio. In the proposed model, the ZVS area is confirmed using five-phase ratios with voltage modulation ratios as variables and verified using MATLAB and experiments.

Suggested Citation

  • Hyung-Jun Byun & Jung-Min Park & Junsin Yi & Chung-Yuen Won, 2023. "Zero-Voltage-Switching Analysis Model of the Triple-Active-Bridge Converter," Energies, MDPI, vol. 16(23), pages 1-22, November.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:23:p:7763-:d:1287347
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    References listed on IDEAS

    as
    1. Peng Dai & Shuyu Liu & Shiqi Fang & Zheng Gong, 2023. "Optimal Asymmetric Duty Modulation for Dual Active Bridge Converters with DC Blocking Capacitors," Energies, MDPI, vol. 16(18), pages 1-18, September.
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