Low-voltage ride-through capability of cascaded H-bridge multilevel converters for large-scale photovoltaic power plants

Hossein Dehghani Tafti, Ali Iftekhar Maswood, Georgios Konstantinou, Josep Pou

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

12 Citations (Scopus)

Abstract

Multilevel cascade H-bridge (CHB) converters are increasingly applied for large-scale grid-connected photovoltaic power plants (GCPVPPs) because of their improved quality of output voltage waveforms, high efficiency due to the elimination of the line frequency transformer and modular structure. On the other hand, due to the high penetration of the installed distributed generation units in the power system, low-voltage ride-through (LVRT) capability and injection of reactive power during voltage sags are becoming necessary for large-scale GCPVPPs. This paper studies the LVRT capability of the grid-connected CHB inverter of a GCPVPP during various voltage sag conditions. Active/reactive power injection to the grid is also considered according to grid codes. The performance of the grid-connected seven-level CHB with LVRT capability is investigated on a 10-MVA GCPVPP, connected to the 6.6 kV medium-voltage grid simulation model during various voltage sag conditions.

Original languageEnglish
Title of host publication2016 IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2016
PublisherIEEE Computer Society
Pages52-57
Number of pages6
ISBN (Electronic)9781509043033
DOIs
Publication statusPublished - Dec 22 2016
Externally publishedYes
Event2016 IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2016 - Melbourne, Australia
Duration: Nov 28 2016Dec 1 2016

Publication series

NameIEEE PES Innovative Smart Grid Technologies Conference Europe

Conference

Conference2016 IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2016
Country/TerritoryAustralia
CityMelbourne
Period11/28/1612/1/16

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

ASJC Scopus Subject Areas

  • Computer Networks and Communications
  • Information Systems

Keywords

  • active/reactive power injection
  • cascaded H-bridge (CHB) converter
  • low-voltage ride-through (LVRT)
  • multilevel converter
  • Photovoltaic systems
  • unbalanced voltage sag

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