A stored energy control based active DC filter for the alternate arm converter with an extended overlap period

Pierre Vermeersch, Francois Gruson, Michael M.C. Merlin, Xavier Guillaud, Philippe Egrot

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

Abstract / Description of output

The Alternate Arm Converter (AAC) is a multilevel Voltage Source Converter (VSC) suitable for HVDC systems with DC-fault blocking capability. In its 'Short-Overlap' configuration (SO-AAC) it requires a bulky passive DC filter to suppress the DC current ripple caused by the rectification of the grid currents in the DC link. With an Extended-Overlap period (EO-AAC), an active DC filtering control strategy can be implemented thanks the fact that there is always one phase in overlap mode, providing a continuous control of the DC current. Previous works have been realized considering DC inductors at each pole of the DC link. In this paper, a stored energy control assessment is proposed leading to the deduction of a stored energy model allowing a formal DC current control without DC inductors. The proposed control is supported through a static analysis and dynamic simulation in order to demonstrate its effectiveness.

Original languageEnglish
Title of host publication2019 21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9789075815313
DOIs
Publication statusPublished - 28 Nov 2019
Event21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe - Genova, Italy
Duration: 3 Sept 20195 Sept 2019

Publication series

Name2019 21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe

Conference

Conference21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe
Country/TerritoryItaly
CityGenova
Period3/09/195/09/19

Keywords / Materials (for Non-textual outputs)

  • AAC
  • Active Filter
  • Control
  • HVDC

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