A Novel PWM Modulation Strategy for DC Voltage Balancing in Cascaded H-Bridge Multilevel Converters

Author

Barrena, Jon Andoni ; Marroyo, Luis ; Rodríguez, Miguel Ángel ; Torrealday, José Ramón

Author_Institution

Univ. of Mondragon, Mondragon

fYear

2007

fDate

9-12 Sept. 2007

Firstpage

1450

Lastpage

1456

Abstract

This paper presents a novel Voltage Balancing PWM modulation strategy for Cascaded H-Bridge multilevel converters. These converters have been classically commu-tated at fundamental line-frequencies, but the evolution of Power Semiconductors has allowed to increase switching frequencies and the power ratings of these devices, permitting the use of PWM modulation techniques. This paper presents a new PWM modulation strategy that solves the DC Bus voltage balancing problems that appear in the cascaded converter working in reactive power compensation (STATCOM) applications.

Keywords

PWM power convertors; static VAr compensators; switching convertors; DC bus voltage balancing problems; DC voltage balancing; PWM modulation strategy; cascaded H-bridge multilevel converters; power semiconductors; switching frequencies; Automatic voltage control; Control systems; Flexible AC transmission systems; Power grids; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Reactive power; Reactive power control; Voltage control; Multilevel converter; STATCOM;

fLanguage

English

Publisher

ieee

Conference_Titel

EUROCON, 2007. The International Conference on "Computer as a Tool"

Conference_Location

Warsaw

Print_ISBN

978-1-4244-0813-9

Electronic_ISBN

978-1-4244-0813-9

Type

conf

DOI

10.1109/EURCON.2007.4400602

Filename

4400602