DC Voltage Balancing for PWM Cascaded H-Bridge Converter Based STATCOM

Author

Barrena, Jon Andoni ; Marroyo, Luis ; Rodriguez, Miguel Angel ; Alonso, Oscar ; Torrealday, Jose Ramon

Author_Institution

Fac. of Eng., Mondragon Univ., Arrasate

fYear

2006

fDate

6-10 Nov. 2006

Firstpage

1840

Lastpage

1845

Abstract

This paper presents a new control method for cascaded connected H-bridge converter based STATCOMs. These converters have been classically commutated 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 mainly focuses the DC bus voltage balancing problems, and proposes a new control technique that solves these balancing problems maintaining the delivered reactive power equally distributed among all the H-bridges of the converter

Keywords

PWM power convertors; bridge circuits; commutation; reactive power; static VAr compensators; switching convertors; DC voltage balancing; PWM cascaded H-bridge converter; PWM modulation techniques; STATCOM; power semiconductors; reactive power; Automatic voltage control; Capacitors; Flexible AC transmission systems; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Reactive power; Reactive power control; Switching converters; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

IEEE Industrial Electronics, IECON 2006 - 32nd Annual Conference on

Conference_Location

Paris

ISSN

1553-572X

Print_ISBN

1-4244-0390-1

Type

conf

DOI

10.1109/IECON.2006.347549

Filename

4153131