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New Sub-Module with Reverse Blocking IGBT for DC Fault Ride-Through in MMC-HVDC System

Author

Listed:
  • Ui-Jin Kim

    (The Department of Electrical and Biomedical Engineering, Hanyang University, Seoul 04763, Korea)

  • Seok-Gyu Oh

    (Department of Mechatronics Engineering, GNTECH, Jinju 52725, Korea)

Abstract

When integrating multi-grid renewable energy systems, modular multi-level converters (MMCs) are promising for high-voltage DC (HVDC) transmission. Because of the characteristics of the system, however, it is more difficult to prevent a fault at the DC terminal than at the AC terminal of the MMC. Accordingly, a fault ride-through (FRT) strategy for the operation of the MMC in the DC terminal is required for stable system operation. In this paper, a solution for closed-circuit overcurrent caused by a permanent line-to-line DC fault is proposed. This method is able to reduce the fault current through the adjustment of the slope of the total voltage in the system by operating a sub-module having lower switching losses and fewer passive devices compared with existing topologies. Additionally, through the equivalent circuit of the proposed scheme in a sub-module in case of a fault, the FRT mechanism for the fault current is explained. The feasibility of this proposed technique was verified through time-domain simulations implemented by Powersim, Inc.

Suggested Citation

  • Ui-Jin Kim & Seok-Gyu Oh, 2021. "New Sub-Module with Reverse Blocking IGBT for DC Fault Ride-Through in MMC-HVDC System," Energies, MDPI, vol. 14(6), pages 1-17, March.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:6:p:1551-:d:515024
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    References listed on IDEAS

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    1. Xinhan Meng & Ke-Jun Li & Zhuodi Wang & Wenning Yan & Jianguo Zhao, 2015. "A Hybrid MMC Topology with dc Fault Ride-Through Capability for MTDC Transmission System," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-11, October.
    2. Hongchun Shu & Na An & Bo Yang & Yue Dai & Yu Guo, 2020. "Single Pole-to-Ground Fault Analysis of MMC-HVDC Transmission Lines Based on Capacitive Fuzzy Identification Algorithm," Energies, MDPI, vol. 13(2), pages 1-18, January.
    3. Yingjie Wang & Bo Yang & Huifang Zuo & Haiyuan Liu & Haohao Yan, 2018. "A DC Short-Circuit Fault Ride Through Strategy of MMC-HVDC Based on the Cascaded Star Converter," Energies, MDPI, vol. 11(8), pages 1-14, August.
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    Cited by:

    1. Andrzej Mondzik, 2023. "T-NPC Soft-Commutated Inverter Based on Reverse Blocking IGBTs with the Novel Concept of a DESAT Control Circuit in the Gate Driver," Energies, MDPI, vol. 16(12), pages 1-13, June.
    2. Freeman Chiranga & Lesedi Masisi, 2021. "Variable Speed Drive DC-Bus Voltage Dip Proofing," Energies, MDPI, vol. 14(24), pages 1-19, December.

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