Submodule configuration of HVDC-DC auto transformer considering DC fault

Zhiwen Suo, Gengyin Li, Rui Li, Lie Xu, Weisheng Wang, Yongning Chi, Wei Sun

Research output: Contribution to journalArticle

Abstract

This paper studies the submodule configuration of MMC based non-isolated HVDC-DC autotransformer (HVDC-AT) with DC fault blocking capability, including two-terminal and multi-terminal topologies. The operation principle of the HVDC-AT is described. Considering the arm current differences, the total number of required semiconductors for the HVDC-AT is derived and is compared with the MMC based isolated front-to-front (F2F) DC transformer. A full operation process for the multi-terminal HVDC-AT considering DC fault is then presented, including normal operation, fault isolation and continuous operation of healthy converters after fault. The submodule configuration and fault recovery of the multi-terminal HVDC-AT are validated by simulations using PSCAD/EMTDC.
LanguageEnglish
Pages1-24
Number of pages24
JournalIET Power Electronics
Publication statusAccepted/In press - 22 Aug 2016

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DC transformers
Topology
Semiconductor materials
Recovery

Keywords

  • renewable energy
  • HVDC technology
  • offshore wind power
  • modular multilevel converter

Cite this

Suo, Z., Li, G., Li, R., Xu, L., Wang, W., Chi, Y., & Sun, W. (Accepted/In press). Submodule configuration of HVDC-DC auto transformer considering DC fault. IET Power Electronics, 1-24.
Suo, Zhiwen ; Li, Gengyin ; Li, Rui ; Xu, Lie ; Wang, Weisheng ; Chi, Yongning ; Sun, Wei. / Submodule configuration of HVDC-DC auto transformer considering DC fault. In: IET Power Electronics. 2016 ; pp. 1-24.
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Submodule configuration of HVDC-DC auto transformer considering DC fault. / Suo, Zhiwen; Li, Gengyin; Li, Rui; Xu, Lie; Wang, Weisheng; Chi, Yongning; Sun, Wei.

In: IET Power Electronics, 22.08.2016, p. 1-24.

Research output: Contribution to journalArticle

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AU - Li, Gengyin

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