A current symmetrical hybrid multilevel DC-AC converter

Author

Jappe, T.K. ; Mussa, Samir Ahmad ; Heldwein, Marcelo L. ; Caballero, D.R. ; Paredes, C.

Author_Institution

Electr. Eng. Dept., Fed. Univ. of Santa Catarina - UFSC, Florianópolis, Brazil

fYear

2011

fDate

Aug. 30 2011-Sept. 1 2011

Firstpage

1

Lastpage

9

Abstract

This work presents the analysis of new symmetrical hybrid current source-type multilevel inverter topologies. A three-level current cell (TCC) and its respective modulation pattern are proposed. The purpose of the circuits presented here is to reduce current stresses that affects the power semiconductor devices and improve harmonic distortion of the voltages applied to the load. This is done by distributing currents among the switches in the three-level cell. As a characteristic of the proposed cells, some of the switches operate at low frequency while others are switched at high frequency. To validate the operating principle a single-phase circuit has been simulated, operating at 1.0 kHz for the fast switches and 50 Hz for the slow switches. Also featured in this paper is the extension to three-phase versions of the proposed converter.

Keywords

DC-AC power convertors; harmonic distortion; power semiconductor devices; TCC; current symmetrical hybrid multilevel DC-AC converter; frequency 1.0 kHz; frequency 50 Hz; harmonic distortion; modulation pattern; power semiconductor devices; single-phase circuit; three-level current cell; Bridge circuits; Frequency modulation; Inverters; Pulse width modulation; Switches; Topology; Current source inverter; High current inverter; High resolution multilevel inverter; Hybrid multilevel; Multilevel converters;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications (EPE 2011), Proceedings of the 2011-14th European Conference on

Conference_Location

Birmingham

Print_ISBN

978-1-61284-167-0

Electronic_ISBN

978-90-75815-15-3

Type

conf

Filename

6020649