Fault-Tolerant Converter with a Modular Structure for HVDC Power Transmitting Applications

Yihua Hu, Guipeng Chen, Yang Liu, Lin Jiang, Peng Li, Stephen J. Finney, Wenping Cao, Huifeng Chen

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

For the high-voltage direct-current (HVDC) power transmission system of offshore wind power, dc/dc converters are the potential solution to collect the power generated by off-shore wind farms to HVDC terminals. The converters operate with high-voltage gain, high efficiency, and fault tolerance over a wide range of operating conditions. In this paper, an isolated ultrahigh step-up dc/dc converter with a scalable modular structure is proposed for HVDC offshore wind power collection. A flyback-forward converter is employed as the power cell to form the expandable electrically isolated modular dc/dc converter. The duty ratio and phase-shift angle control are also developed for the proposed converter. Fault-tolerant characteristics of the converter are illustrated through the redundancy operation and fault-ride-through tests. Redundancy operation is designed to maintain high operation efficiency of the converters and fault-ride-through operation improves the converter reliability under harsh operating conditions. Analytical studies are carried out, and a 750-W prototype with three modular cells is built and experimentally tested to verify the performance of the proposed modular dc/dc converter. © 2017 IEEE.
Original languageEnglish
Pages (from-to)2245-2256
Number of pages12
JournalIEEE Transactions on Industry Applications
Volume53
Issue number3
Early online date24 Jan 2017
DOIs
Publication statusPublished - 1 May 2017

Fingerprint

Electric potential
Wind power
Redundancy
DC power transmission
Offshore wind farms
Fault tolerance
Phase shift

Keywords

  • DC/DC converters
  • high step-up
  • high-voltage direct-current (HVDC)
  • scalability
  • wind power generation

Cite this

Fault-Tolerant Converter with a Modular Structure for HVDC Power Transmitting Applications. / Hu, Yihua; Chen, Guipeng; Liu, Yang; Jiang, Lin; Li, Peng; Finney, Stephen J.; Cao, Wenping; Chen, Huifeng.

In: IEEE Transactions on Industry Applications, Vol. 53, No. 3, 01.05.2017, p. 2245-2256.

Research output: Contribution to journalArticle

Hu, Yihua ; Chen, Guipeng ; Liu, Yang ; Jiang, Lin ; Li, Peng ; Finney, Stephen J. ; Cao, Wenping ; Chen, Huifeng. / Fault-Tolerant Converter with a Modular Structure for HVDC Power Transmitting Applications. In: IEEE Transactions on Industry Applications. 2017 ; Vol. 53, No. 3. pp. 2245-2256.
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