Control of a hybrid seven-level PWM inverter

A. Villarruel-Parra, I. Araujo-Vargas, N. Mondragon-Escamilla, A.J. Forsyth

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

Abstract

A control strategy to operate a hybrid multilevel inverter is described in this paper. The inverter produces seven-level PWM voltage waveforms using twelve transistors and a three-phase transformer for harmonic elimination offering the following advantages: flying capacitors with neutral clamped circuits are not required, a small number of switching devices is used and the PWM switching losses are minimal. The proposed control technique is implemented on an 8 - bit microcontroller, and was designed to operate all the transistors of the converter using only one carrier and modulating signals, offering a simple control solution. The circuit operation and the design of the control principle are discussed in this paper together with experimental results obtained with a 1 kW prototype.
Original languageEnglish
Title of host publication12th IEEE International Power Electronics Congress
Subtitle of host publicationCIEP 2010
EditorsRicardo Alvarez, Liliana Felix
Place of PublicationUnited States
PublisherIEEE
Pages191-196
Number of pages6
ISBN (Print)9781424480678
DOIs
Publication statusPublished - 2010
Event12th IEEE International Power Electronics Congress - San Luis Potosi, Mexico
Duration: 22 Aug 201025 Aug 2010

Conference

Conference12th IEEE International Power Electronics Congress
Country/TerritoryMexico
CitySan Luis Potosi
Period22/08/1025/08/10

Keywords

  • Multilevel
  • Inverter
  • Control
  • Three-phase
  • PWM

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