Improved control strategy of full-bridge modular multilevel converter

G. P. Adam

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

3 Citations (Scopus)
77 Downloads (Pure)


This paper describes a control approach that allows the cell capacitors of the full-bridge modular multilevel converter (FB-MMC) to be controlled independent of dc link voltage. Also the control approach offers the possibility of operating the FB-MMC from bi-polar dc link voltages; thus, creating new possibilities for building generic hybrid dc grids with reversible dc link voltage, where conventional line commutated current source converters can operate in conjunction with voltage source converters. Additionally the control approach improves dc fault ride-through of the FB-MMC compared with existing approaches. This is achieved by active control of the arm currents and cell capacitor voltages, and exploitation of the FB-MMC redundant switch states. FB-MMC operation with reversible DC link voltage and decoupled control of the cell capacitor voltages from the dc link voltage are demonstrated using simulations.
Original languageEnglish
Title of host publicationElectrical Power and Energy Conference (EPEC), 2015 IEEE
Place of PublicationPiscataway
Pages326 - 331
Number of pages6
ISBN (Print)9781479976621
Publication statusPublished - 26 Oct 2015
Event2015 Electrical Power and Energy Conference - London Convention Centre, London, Ontario, Canada
Duration: 26 Oct 201528 Oct 2015


Conference2015 Electrical Power and Energy Conference
Abbreviated titleEPEC 2015
CityLondon, Ontario
Internet address


  • dc fault ride-through capability
  • dc short circuit proof
  • high-voltage DC transmission systems
  • half and full bridge modular multilevel converters
  • line commutated converter
  • bridge circuits
  • electric current control
  • power grids
  • power system control
  • power system faults
  • power system reliability
  • redundancy
  • switching convertors
  • voltage control


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