Elimination of harmonies in a multilevel converter with non equal DC sources

Leon M. Tolbert, John Chiasson, Keith McKenzie, Zhong Du

Research output: Contribution to conferencePaperpeer-review

38 Scopus citations

Abstract

The problem of eliminating harmonics in a multilevel converter in which the separate DC sources vary is considered. That is, given a desired fundamental output voltage, the problem is to find the switching times (angles) that produce the fundamental while not generating specifically chosen harmonics. Assuming that the separate DC sources can be measured, a procedure is given to find all sets of switching angles for which the fundamental is produced while the 5th and 7th are eliminated. This is done by first converting the transcendental equations that specify the elimination of the harmonics into an equivalent set of polynomial equations. Then, using the mathematical theory of resultants, all solutions to this equivalent problem can be found. Experimental results are presented to validate the theory.

Original languageEnglish
Pages589-595
Number of pages7
DOIs
StatePublished - 2003
EventEigtheenth Annual IEEE Applied Power Electronics Conference and Exposition - Miami Beach, FL, United States
Duration: 9 Feb 200313 Feb 2003

Conference

ConferenceEigtheenth Annual IEEE Applied Power Electronics Conference and Exposition
Country/TerritoryUnited States
CityMiami Beach, FL
Period9/02/0313/02/03

Keywords

  • Harmonic Cancellation
  • Multilever Inverter
  • Non Equal DC Sources

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