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


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
Number of pages6
ISBN (Print)9781424480678
Publication statusPublished - 2010
Event12th IEEE International Power Electronics Congress - San Luis Potosi, Mexico
Duration: 22 Aug 201025 Aug 2010


Conference12th IEEE International Power Electronics Congress
CitySan Luis Potosi


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


Dive into the research topics of 'Control of a hybrid seven-level PWM inverter'. Together they form a unique fingerprint.

Cite this