Modular input-parallel-output-series DC/DC converter control with fault detection and redundancy

Yiqing Lian, D. Holliday, S. Finney

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

7 Citations (Scopus)
265 Downloads (Pure)

Abstract

Large offshore wind farms will require an extensive sub-sea power network to provide internal interconnection. Present solutions are based around conventional medium-voltage AC architectures. This paper proposes an alternative DC collection network based around modular DC/DC converters with input-parallel-output-series (IPOS) connection. Small-signal analysis of the converter is presented, to assist in control scheme development for the converter input and output stages. A Lyapunov controller is embedded within the conventional output voltage sharing control loop. A master-slave control scheme is proposed to ensure power sharing under a range of operating conditions, and provides fault-tolerant operation since the status of 'master' can be reallocated in the event that the present 'master' module fails.
Original languageEnglish
Title of host publication11th IET International Conference on AC and DC Power Transmission
Place of PublicationPiscataway, NJ.
PublisherIEEE
Pages1-8
Number of pages8
ISBN (Print)9781849199827
DOIs
Publication statusPublished - 10 Feb 2015
Event11th IET International Conference on AC and DC Power Transmission - Birmingham, United Kingdom
Duration: 10 Feb 201512 Feb 2015
http://conferences.theiet.org/acdc/index.cfm

Conference

Conference11th IET International Conference on AC and DC Power Transmission
CountryUnited Kingdom
CityBirmingham
Period10/02/1512/02/15
Internet address

Keywords

  • DC collection network
  • wind power plants
  • voltage sharing control loop
  • voltage control
  • sub-sea power network interconnection
  • small-signal analysis
  • redundancy
  • DC/DC converter
  • fault detection
  • fault diagnosis
  • IPOS connection
  • power sharing
  • Lyapunov controller
  • n+1 redundancy

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