Unbalanced three-phase control using offset-voltage for H-bridge multilevel inverter with faulty power cells

Young M. Park, Han Seoung Lyoo, Hyun W. Lee, Myung G. Jung, Se Hyun Lee, Ji Yoon Yoo

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

9 Citations (Scopus)

Abstract

In this paper, unbalanced three-phase control method is proposed to increase the fault tolerance for H-bridge multilevel inverter under the conditions of faulty power cells. It is possible to generate a balanced three-phase line-to-line voltage by phase-shifting and bypassing faulty power cells with a minimum voltage drop. In this method, the concept of voltage modulation by using offset voltage is applied to an unbalanced three-phase control method. Especially, it is possible to use the maximum output voltage of inverter by adopting the real time unbalanced control method of phase voltage irrespective of the fault location and the number of disabled power cells. Also, the feasibility of the proposed method is proved by the H-bridge multilevel inverter test composed of 7-level.

Original languageEnglish
Title of host publicationPESC Record - IEEE Annual Power Electronics Specialists Conference
Pages1790-1795
Number of pages6
DOIs
Publication statusPublished - 2008 Sep 29
EventPESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Rhodes, Greece
Duration: 2008 Jun 152008 Jun 19

Other

OtherPESC '08 - 39th IEEE Annual Power Electronics Specialists Conference
CountryGreece
CityRhodes
Period08/6/1508/6/19

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Modelling and Simulation
  • Condensed Matter Physics

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    Park, Y. M., Lyoo, H. S., Lee, H. W., Jung, M. G., Lee, S. H., & Yoo, J. Y. (2008). Unbalanced three-phase control using offset-voltage for H-bridge multilevel inverter with faulty power cells. In PESC Record - IEEE Annual Power Electronics Specialists Conference (pp. 1790-1795). [4592203] https://doi.org/10.1109/PESC.2008.4592203