High reliability Multiport Multiphase DC hub

Weixing Lin, Dragan Jovcic

Research output: Chapter in Book/Report/Conference proceedingPublished conference contribution

3 Citations (Scopus)


A Multiphase Multiport DC hub concept is proposed in this paper. The DC hub is capable of connecting multiple DC transmission lines with different DC voltages. Multiphase LCL inner circuit is used to increase the power rating and reliability of each port. Adding a phase in the inner AC circuit increases power transfer and improves utilization of DC cables which have higher rating than the high power switches. When fault happens at the converter bridge of the hub, the faulted phase of the converter bridge is tripped and the inner LCL circuit is reconfigured to a balanced AC system with reduced number of phases. On permanent DC fault at any DC transmission line, the port connected to the faulted DC transmission line is tripped so that the DC fault will not affect normal operation of the other remaining DC transmission line. Simulation of a 3-port 4-phase DC hub in PSCAD/EMTDC demonstrated the high reliability of DC hub after tripping a port and after tripping a phase.

Original languageEnglish
Title of host publication2013 IEEE Industry Applications Society Annual Meeting (IAS 2013)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages8
ISBN (Electronic)9781467352024
Publication statusPublished - 12 Dec 2013
Event2013 IEEE Industry Applications Society Annual Meeting, IAS 2013 - Lake Buena Vista, FL, United States
Duration: 6 Oct 201311 Oct 2013


Conference2013 IEEE Industry Applications Society Annual Meeting, IAS 2013
Country/TerritoryUnited States
CityLake Buena Vista, FL

Bibliographical note

This project is funded by European Research Council under the ldeas program in FP7; grant no 259328, 2010.


  • DC power systems
  • DC power transmission
  • DC-DC power conversion
  • HVDC converters
  • HVDC transmission
  • wind energy


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