Fault detection and tolerant control of 3-phase NPC active rectifier

  • Hyun Keun Ku*
  • , Won Sang Im
  • , Jang Mok Kim
  • , Yong Sug Suh
  • *Corresponding author for this work

Research output: Contribution to conferenceConference paperpeer-review

Abstract

Compared to conventional 2-level AC/DC PWM converter, the 3-phase NPC active rectifier has a high number of power semi-conductors. Hence the possibility of the open-switch faults is much higher. Due to the many number of active elements, the detection and the tolerant control of the open-switch faults are more complicated than the conventional 2-level converter. Furthermore, the open-switch faults give rise to imbalance of the AC input currents and the fluctuation DC-link voltage. This paper proposes the open-switch fault detection method and the tolerant control method. In particular, open-switch fault case of one switch among inner six switches of NPC active rectifier is analyzed. The usefulness of this paper is verified through the computer simulation and experimentations, respectively.

Original languageEnglish
Title of host publication2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012
Pages4519-4524
Number of pages6
DOIs
StatePublished - 2012
Event4th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2012 - Raleigh, NC, United States
Duration: 2012.09.152012.09.20

Publication series

Name2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012

Conference

Conference4th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2012
Country/TerritoryUnited States
CityRaleigh, NC
Period12.09.1512.09.20

Keywords

  • 3-level AC/DC converter
  • Diagnosis
  • Fault detection
  • Fault tolerant control
  • NPC active rectifier

Quacquarelli Symonds(QS) Subject Topics

  • Engineering - Electrical & Electronic
  • Engineering - Petroleum

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