Control strategy for 2-terminal high power LCL DC-DC converter

Weixing Lin, Dragan Jovcic

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

10 Citations (Scopus)


This paper proposes a control strategy for 2-terminal LCL DC-DC converter. Cascaded control consists of outer loop power control, with inner loop current control in order limit converter currents. Three coordinate frames are used in order to satisfy zero reactive current at each bridge and power balance. The control strategy enables the 2-terminal LCL DC-DC converter operating in the whole range of the designed power rating and current limitation during faults. Operating principles of the LCL DC-DC converter and procedures for design the control strategy are presented. Effectiveness of the control strategy during step power orders and DC faults is verified by simulation of a detailed PSCAD model for a 200kV/640kV, 500MW 2-terminal LCL DC-DC converter.

Original languageEnglish
Title of host publication2013 IEEE Power and Energy Society General Meeting (PES 2013)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages5
ISBN (Electronic)9781479913039
ISBN (Print)9781479913022
Publication statusPublished - 25 Nov 2013
Event2013 IEEE Power and Energy Society General Meeting, PES 2013 - Vancouver, BC, Canada
Duration: 21 Jul 201325 Jul 2013


Conference2013 IEEE Power and Energy Society General Meeting, PES 2013
CityVancouver, BC

Bibliographical note

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


  • current control
  • DC grids
  • DC-DC power conversion
  • high voltage DC transmission
  • IGBT converter


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