Design and Validation of MMC VSC-HVDC Power Modules Based on 6.5 kV Press-Pack Power Devices

Yanfeng WANG, Feng LI, Mengze YU, He CHEN, Yadong CAO, Zhun LIU, Yifan WANG, Wei SHI

South Power Sys Technol ›› 2025, Vol. 19 ›› Issue (12) : 63-74.

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South Power Sys Technol ›› 2025, Vol. 19 ›› Issue (12) : 63-74. DOI: 10.13648/j.cnki.issn1674-0629.2025.12.007
Special Issue on Power Electronics in Power Systems

Design and Validation of MMC VSC-HVDC Power Modules Based on 6.5 kV Press-Pack Power Devices

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Abstract

Offshore wind power has the advantages of abundant resources and broad utilization prospects, and it is also of great significance for China to achieve “dual-carbon” goal. The tight space layout, harsh environment, and complicated operation and maintenance conditions of deep and distant sea offshore platforms require higher requirements for lightweighting, compactness, and reliability of voltage source converter based high voltage direct current (VSC-HVDC) converter stations. For the offshore wind power transmission system via VSC-HVDC, 6.5 kV power devices are used to reduce the construction cost and equipment footprint, and improve the transmission capacity per unit volume. A compact and lightweight VSC-HVDC power module is designed based on a 6.5 kV integrated gate commutated thyristor (IGCT), which improves the stability of the IGCT black start circuit and verifies its reliability through experiments, providing technical support for subsequent development.

Key words

offshore wind power / VSC-HVDC power module / IGCT

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Yanfeng WANG , Feng LI , Mengze YU , et al . Design and Validation of MMC VSC-HVDC Power Modules Based on 6.5 kV Press-Pack Power Devices[J]. Southern Power System Technology. 2025, 19(12): 63-74 https://doi.org/10.13648/j.cnki.issn1674-0629.2025.12.007

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Funding

the Science and Technology Project of China Southern Power Grid Co., Ltd(037700 KC24010002)
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