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Research on Hybrid Rectifier for High Power Electrolytic Hydrogen Production Based on Modular Multilevel Converter

Author

Listed:
  • Cheng Huang

    (School of Electrical Engineering, Xinjiang University, Urumqi 830046, China)

  • Yang Tan

    (School of Electrical Engineering, Sichuan University, Chengdu 610065, China)

  • Xin Meng

    (School of Electrical Engineering, Sichuan University, Chengdu 610065, China)

Abstract

Aiming at the problem that silicon-controlled rectifiers (SCR) and pulse width modulation (PWM) rectifiers cannot balance high power levels, high hydrogen production efficiency, and high grid connected quality in the current research on rectifier power supplies for electrolytic hydrogen production, a new hybrid rectifier topology based on a modular multilevel converter (MMC) is proposed. The hybrid topology integrates a silicon-controlled rectifier (SCR) with an auxiliary power converter, wherein the SCR is designated as the primary power source for electrolytic hydrogen production. The auxiliary converter employs a cascaded modular multilevel converter (MMC) and an input-series-output-parallel (ISOP) phase-shifted full-bridge (PSFB) arrangement. This configuration allows the auxiliary converter to effectively mitigate AC-side harmonics and minimize DC-side ripple, concurrently transmitting a small amount of power. The effectiveness of the hybrid rectifier in achieving low ripple and harmonic distortion outputs was substantiated through hardware-in-the-loop experiments. Notably, the hybrid topology is characterized by its enhanced electric-to-hydrogen conversion efficiency, elevated power density, cost efficiency, and improved grid compatibility.

Suggested Citation

  • Cheng Huang & Yang Tan & Xin Meng, 2024. "Research on Hybrid Rectifier for High Power Electrolytic Hydrogen Production Based on Modular Multilevel Converter," Energies, MDPI, vol. 17(9), pages 1-14, May.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:9:p:2188-:d:1387972
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