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Comparison of Interleaving Methods of Parallel Connected Three-Level Bi-Directional Converters

Author

Listed:
  • Hae-In Kim

    (Department of Control and Instrumentation Engineering, Korea University of Transportation, Chungju 27469, Korea)

  • Su-Hwan Kim

    (Department of Control and Instrumentation Engineering, Korea University of Transportation, Chungju 27469, Korea)

  • Seung-Woo Baek

    (Department of Control and Instrumentation Engineering, Korea University of Transportation, Chungju 27469, Korea)

  • Hag-Wone Kim

    (Department of Control and Instrumentation Engineering, Korea University of Transportation, Chungju 27469, Korea)

  • Kwan-Yuhl Cho

    (Department of Control and Instrumentation Engineering, Korea University of Transportation, Chungju 27469, Korea)

  • Gil-Dong Kim

    (Propulsion System Research Department, Korea Railroad Research Institute, Uiwang 16015, Korea)

Abstract

The voltage and current ripples in the three-level bi-directional converter (TLBC) can be reduced by an interleaving technique that controls a phase difference between the modules of power converter. On the other hand, the inductor current ripple in TLBC is increased due to the circulating current between the modules. In this paper, the effects of two interleaving methods on a two-phase TLBC, Z-type and N-type, are investigated and compared. In particular, capacitor current ripple, and voltage ripple are compared by two interleaving methods verified through Powersim (PSIM) simulation.

Suggested Citation

  • Hae-In Kim & Su-Hwan Kim & Seung-Woo Baek & Hag-Wone Kim & Kwan-Yuhl Cho & Gil-Dong Kim, 2021. "Comparison of Interleaving Methods of Parallel Connected Three-Level Bi-Directional Converters," Energies, MDPI, vol. 15(1), pages 1-19, December.
    • Handle: RePEc:gam:jeners:v:15:y:2021:i:1:p:6-:d:707395
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