Efficient modulation technique for a four-leg fault-tolerant neutral-point-clamped inverter

Salvador Ceballos, Josep Pou, Jordi Zaragoza, Jose Luis Martin, Eider Robles, Igor Gabiola

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

This paper presents a new low-loss modulation technique for the hybrid three-level four-leg converter. The total losses of the converter are reduced on about 18% in average compared to the standard three-leg neutral-point-clamped converter. Furthermore, the low-frequency voltage oscillation in the neutral-point is completely cancelled, and maximum benefit of the dc-link voltage is obtained. All these facts, together with the fault-tolerant ability due to the fourth leg, make this topology very interesting for applications such as wind generation, in which it is important to maximize efficiency and reliability. Some experimental results confirm good performance of the proposed modulation technique.

Original languageEnglish
Title of host publicationIECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics
Pages2090-2095
Number of pages6
DOIs
Publication statusPublished - 2006
EventIECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics - Paris, France
Duration: 6 Nov 200610 Nov 2006

Publication series

NameIECON Proceedings (Industrial Electronics Conference)

Conference

ConferenceIECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics
Country/TerritoryFrance
CityParis
Period6/11/0610/11/06

Keywords

  • Low losses
  • Multilevel converter
  • Neutral-point-clamped (NPC) converter
  • Reliability
  • Voltage oscillation

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