Limitations of overlap control for energy balancing of the alternate arm converter under imbalanced ac grid conditions

Jinke Li*, Harith R. Wickramasinghe, Georgios Konstantinou, Josep Pou, Xinmin Jin

*Corresponding author for this work

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

7 Citations (Scopus)

Abstract

Energy balancing of the alternate arm converter (AAC) takes place during the overlap period, when a circulating current flows through both arms of the converter. In this paper, the limitations of the commonly used energy balancing methods of the AAC under grid imbalances are demonstrated. It is shown that the overlap control can only provide sufficient energy balancing for a relatively limited voltage imbalance degree of the ac voltages and larger imbalances greatly impact the energy balancing of the AAC. The limitations of the overlap control are demonstrated through real-time digital simulations of an 800-MVA benchmark AAC model under single-phase, phase-to-phase and three-phase ac imbalances with varying imbalance degrees.

Original languageEnglish
Title of host publication2017 Asian Conference on Energy, Power and Transportation Electrification, ACEPT 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
ISBN (Electronic)9781538609712
DOIs
Publication statusPublished - Dec 5 2017
Externally publishedYes
Event2017 Asian Conference on Energy, Power and Transportation Electrification, ACEPT 2017 - Singapore, Singapore
Duration: Oct 24 2017Oct 26 2017

Publication series

Name2017 Asian Conference on Energy, Power and Transportation Electrification, ACEPT 2017
Volume2017-December

Conference

Conference2017 Asian Conference on Energy, Power and Transportation Electrification, ACEPT 2017
Country/TerritorySingapore
CitySingapore
Period10/24/1710/26/17

Bibliographical note

Publisher Copyright:
© 2017 IEEE.

ASJC Scopus Subject Areas

  • Transportation
  • Energy Engineering and Power Technology
  • Automotive Engineering

Keywords

  • Alternate arm converter
  • energy balancing
  • grid imbalances
  • overlap period

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