Cascaded symmetrical hybrid multilevel Dc-Ac converter

Domingo Ruiz-Caballero, René Sanhueza, Héctor Vergara, Miguel Lopez, Marcelo Lobo Heldwein, Samir Ahmad Mussa

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

20 Scopus citations

Abstract

This paper proposes the cascading of Symmetrical Hybrid Multilevel Inverters based on the three-levels cell (TC). The inverter operates with dc power sources of equal value and two distinct switching frequencies. The presented inverter presents high modularity as an advantage, which makes it very reliable since it can be designed with redundancy in the number of cascaded modules. The modulation strategy for driving the switches is based on the sinusoidal PWM technique known as Phase-Shifted Disposition (PSD). The output voltages for N cascaded cells are represented by means of its Fourier series. A single-phase low power prototype has been built, operating at 1.5 kHz for the fast switches and 50 Hz for the slow switches in order to validate the operating principle.

Original languageEnglish
Title of host publication2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings
Pages4012-4019
Number of pages8
DOIs
StatePublished - 2010
Externally publishedYes
Event2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Atlanta, GA, United States
Duration: 12 Sep 201016 Sep 2010

Publication series

Name2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings

Conference

Conference2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010
Country/TerritoryUnited States
CityAtlanta, GA
Period12/09/1016/09/10

Keywords

  • Cascaded inverters
  • Dc-Ac converters
  • Hybrid inverters
  • Symmetrical multilevel inverters

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