A general modulation strategy for a five-level three-phase current source inverter with regulated intermediate DC link currents

Yakov L. Familiant, D. G. Holmes, T. A. Lipo, B. P. McGrath

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

22 Citations (Scopus)

Abstract

Multilevel converters use series/parallelled semiconductor switching devices to synthesise switched waveforms at power levels that are well above individual device ratings. To date, most multilevel inverter research has focused on voltage source structures, primarily because these topologies address the more common high power converter limiting factor of device voltage ratings. However, multilevel current source converters can have advantages in lower voltage, very high current applications, or in situations where, despite their higher losses, DC inductors have reliability benefits compared to electrolytic capacitors. This paper presents an integrated three phase 5-level Current Source Inverter topology that requires only two intermediate link inductors, and shows how it can be controlled by mapping modulation control signals from a multilevel VSI controller. This allows the wealth of existing knowledge relating to modulation of multilevel VSI's to be immediately applied to the multilevel CSI. The mapping process matches space vectors created by the VSI modulation process to equivalent CSI space vectors, and then selects between redundant space vector alternatives to maintain the current balance of the intermediate link inductors. The converter operation has been verified in a detailed circuit simulation taking account of all second order effects.

Original languageEnglish
Title of host publicationConference Record of the 2007 IEEE Industry Applications Conference 42nd Annual Meeting, IAS
Pages581-588
Number of pages8
DOIs
Publication statusPublished - Dec 1 2007
Event2007 IEEE Industry Applications Conference 42nd Annual Meeting, IAS - New Orleans, LA, United States
Duration: Sep 23 2007Sep 27 2007

Publication series

NameConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
ISSN (Print)0197-2618

Other

Other2007 IEEE Industry Applications Conference 42nd Annual Meeting, IAS
CountryUnited States
CityNew Orleans, LA
Period9/23/079/27/07

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ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

Familiant, Y. L., Holmes, D. G., Lipo, T. A., & McGrath, B. P. (2007). A general modulation strategy for a five-level three-phase current source inverter with regulated intermediate DC link currents. In Conference Record of the 2007 IEEE Industry Applications Conference 42nd Annual Meeting, IAS (pp. 581-588). [4347842] (Conference Record - IAS Annual Meeting (IEEE Industry Applications Society)). https://doi.org/10.1109/IAS.2007.93