Three-phase five-level active-neutral-point-clamped converters for medium voltage applications

Thiago B. Soeiro, Roberto Carballo, Joabel Moia, Guillermo O. Garcia, Marcelo L. Heldwein

Research output: Contribution to conferencePaperpeer-review

31 Scopus citations

Abstract

In this paper various five-level active-neutral-point-clamped converters (ANPCCs) are proposed. These, as for the conventional ANPCC structure, are constructed with a combination of neutral-point-clamped and floating capacitor converter technologies. Depending on the new circuit arrangement, better total semiconductor conduction losses and/or the requirement of lesser active switch part count are achievable when compared to a conventional ANPCC. Additionally, a modulation scheme providing well regulated, balanced and low voltage ripples across the dc-bus capacitors for the studied ANPCCs is presented. The voltage balancing across the phase capacitors is performed by selecting the multilevel converter redundant switching states, which results in different current direction across this device. The technique is implemented in a carrier-based PWM modulation scheme.

Original languageEnglish
Pages85-91
Number of pages7
DOIs
StatePublished - 2013
Externally publishedYes
Event2013 12th Brazilian Power Electronics Conference, COBEP 2013 - Gramado, RS, Brazil
Duration: 27 Oct 201331 Oct 2013

Conference

Conference2013 12th Brazilian Power Electronics Conference, COBEP 2013
Country/TerritoryBrazil
CityGramado, RS
Period27/10/1331/10/13

Keywords

  • Active-neutral-point-clamped converters
  • Capacitor voltage ripple
  • Five-level converter

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