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A Diode-MMC AC/DC Hub for Connecting Offshore Wind Farm and Offshore Production Platform

Author

Listed:
  • Kai Huang

    (Institute for Energy and Environment, University of Strathclyde, Glasgow G1 1XW, UK)

  • Lie Xu

    (Institute for Energy and Environment, University of Strathclyde, Glasgow G1 1XW, UK)

  • Guangchen Liu

    (Department of Electrical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China)

Abstract

A diode rectifier-modular multilevel converter AC/DC hub (DR-MMC Hub) is proposed to integrate offshore wind power to the onshore DC network and offshore production platforms (e.g., oil/gas and hydrogen production plants) with different DC voltage levels. The DR and MMCs are connected in parallel at the offshore AC collection network to integrate offshore wind power, and in series at the DC terminals of the offshore production platform and the onshore DC network. Compared with conventional parallel-connected DR-MMC HVDC systems, the proposed DR-MMC hub reduces the required MMC converter rating, leading to lower investment cost and power loss. System control of the DR-MMC AC/DC hub is designed based on the operation requirements of the offshore production platform, considering different control modes (power control or DC voltage control). System behaviors and requirements during AC and DC faults are investigated, and hybrid MMCs with half-bridge and full-bridge sub-modules (HBSMs and FBSMs) are used for safe operation during DC faults. Simulation results based on PSCAD/EMTDC validate the operation of the DR-MMC hub.

Suggested Citation

  • Kai Huang & Lie Xu & Guangchen Liu, 2021. "A Diode-MMC AC/DC Hub for Connecting Offshore Wind Farm and Offshore Production Platform," Energies, MDPI, vol. 14(13), pages 1-16, June.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:13:p:3759-:d:580380
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    References listed on IDEAS

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    1. Chang-Hwan Park & In-Kyo Seo & Belete Belayneh Negesse & Jong-su Yoon & Jang-Mok Kim, 2021. "A Study on Common Mode Voltage Reduction Strategies According to Modulation Methods in Modular Multilevel Converter," Energies, MDPI, vol. 14(6), pages 1-21, March.
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    Cited by:

    1. Carolina G. Marcelino & João V. C. Avancini & Carla A. D. M. Delgado & Elizabeth F. Wanner & Silvia Jiménez-Fernández & Sancho Salcedo-Sanz, 2021. "Dynamic Electric Dispatch for Wind Power Plants: A New Automatic Controller System Using Evolutionary Algorithms," Sustainability, MDPI, vol. 13(21), pages 1-20, October.
    2. Danilo Herrera & Thiago Tricarico & Diego Oliveira & Mauricio Aredes & Eduardo Galván-Díez & Juan M. Carrasco, 2022. "Advanced Local Grid Control System for Offshore Wind Turbines with the Diode-Based Rectifier HVDC Link Implemented in a True Scalable Test Bench," Energies, MDPI, vol. 15(16), pages 1-21, August.

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