DC link balance and comparison of the symmetrical hybrid multilevel inverter

Author

Filsecker, Felipe ; Reynaldo, Ramos A. ; Ruiz-Caballero, Domingo ; Mussa, Samir A.

Author_Institution

Power Electron. Lab. - LEP, P. Univ. Catolica de Valparaiso, Valparaiso, Chile

fYear

2009

fDate

Sept. 27 2009-Oct. 1 2009

Firstpage

1039

Lastpage

1045

Abstract

The newly introduced symmetrical hybrid multilevel (SHM) inverter is analyzed in this paper. Topics covered in this study include a brief presentation of the topology, DC link voltage balance and a comparison with other multilevel topologies by means simulations. Part count, loss distribution and installed switch power are considered. Experimental results of the DC link balance in a 300 W/200 Vdc 1-phase prototype are exposed. Results indicate a naturally balanced voltage in the DC link capacitors, a rather simple topology compared to other 5-level converters and the highest efficiency among the analyzed converters for line voltages of 6 kV at switching frequencies under 750 Hz.

Keywords

invertors; 1-phase prototype; 5-level converters; DC link capacitors; DC link voltage balance; SHM inverter; frequency 750 Hz; multilevel topology; power 300 W; symmetrical hybrid multilevel inverter; voltage 200 V; voltage 6 kV; Capacitors; Frequency; Laboratories; Medium voltage; Power electronics; Pulse width modulation inverters; Switches; Switching converters; Topology; Transformers; dc link balance; medium-voltage drives; multilevel converters;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Conference, 2009. COBEP '09. Brazilian

Conference_Location

Bonito-Mato Grosso do Sul

ISSN

2175-8603

Print_ISBN

978-1-4244-3369-8

Electronic_ISBN

2175-8603

Type

conf

DOI

10.1109/COBEP.2009.5347661

Filename

5347661