Harmonic distortion of multicarrier PWM strategies in cascaded multilevel converters with unequal DC sources

Author

Rueger, Niklas E. ; Kuhn, Harald ; Mertens, Axel

Author_Institution

Leibniz Univ. Hannover, Hannover

fYear

2007

fDate

2-5 Sept. 2007

Firstpage

1

Lastpage

10

Abstract

Calculating in an analytical way the influence of modulation strategies for multilevel converters is a challenging topic, especially if the theoretical and ideal assumptions are not valid. In this paper, a modular multilevel converter, consisting of three H-Bridges is analysed. Based on analytical formulas, a numerical approach is shown to handle the risen complexity due to the risen number of output levels. The influence on the harmonic content of the output voltage is investigated assuming non-ideal DC sources.

Keywords

PWM power convertors; bridge circuits; computational complexity; harmonic distortion; H-bridges; cascaded multilevel converters; harmonic distortion; modulation strategies; multicarrier PWM strategies; risen complexity; unequal DC sources; Bridge circuits; Drives; Electromagnetic interference; Harmonic analysis; Harmonic distortion; Pulse width modulation; Pulse width modulation converters; Switches; Topology; Voltage; Harmonics; Modulation Strategy; Multilevel Converters; Power Quality;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications, 2007 European Conference on

Conference_Location

Aalborg

Print_ISBN

978-92-75815-10-8

Electronic_ISBN

978-92-75815-10-8

Type

conf

DOI

10.1109/EPE.2007.4417736

Filename

4417736