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A Hybrid Flying Cascaded DC/DC Converter Topology for HVDC Interconnections

  • School of Electrical Engineering and Automation, Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The present landscape for power transmission network is undergoing remarkable change with the significant progress made in HVDC transmission, especially the modular multilevel converter (MMC) which shows many operational advantages for high-power application. Similar to the role of AC-transformer in AC systems, there urgently needs DC/DC converter to interconnect multiple dc transmission lines with different voltage levels. This paper investigates a transformerless high-voltage DC/DC converter termed as hybrid-flying-cascaded DC/DC converter (HFC) is suitable for interconnecting high-voltage. This topology presents the merits of less amount of semiconductors, very attractive capital costs, light converter weight and high system efficiency. In this paper, operating principles of the HFC are analyzed, while the modulation and control schemes are also elaborated. Feasibility of the proposed topology is verified by simulation results based on a 300MW, 300kV/500kV HFC.

Original languageEnglish
Title of host publicationICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3002-3007
Number of pages6
ISBN (Electronic)9788957083130
StatePublished - May 2019
Externally publishedYes
Event10th International Conference on Power Electronics - ECCE Asia, ICPE 2019 - ECCE Asia - Busan, Korea, Republic of
Duration: 27 May 201930 May 2019

Publication series

NameICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia

Conference

Conference10th International Conference on Power Electronics - ECCE Asia, ICPE 2019 - ECCE Asia
Country/TerritoryKorea, Republic of
CityBusan
Period27/05/1930/05/19

Keywords

  • Bidirectional DC/DC converter
  • Diodes
  • Energy buffering string
  • HVDC
  • Hybrid topology
  • Power losses
  • Thyristors

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