Three-level active NPC converter: PWM strategies and loss distribution

Author

Floricau, D. ; Floricau, E. ; Gateau, G.

Author_Institution

Fac. of Electr. Eng., Politeh. Univ. of Bucharest, Bucharest

fYear

2008

fDate

10-13 Nov. 2008

Firstpage

3333

Lastpage

3338

Abstract

The 3L-NPC (Neutral-Point-Clamped) is the most popular multilevel converter used in high-power medium-voltage applications. An important disadvantage of this structure is the unequal distribution of losses among the switches. The performances of 3L-NPC structure were improved by developing the 3L-ANPC (Active-NPC) converter which has more degrees of freedom. In this paper the switching states and the loss distribution problem are studied for different PWM strategies in a STATCOM application. The PSIM simulation results are shown in order to validate the PWM strategies studied for 3L-ANPC converter.

Keywords

PWM power convertors; static VAr compensators; PSIM simulation; PWM; STATCOM; high-power medium-voltage; loss distribution; three-level active neutral-point-clamped converter; unequal distribution; Automatic voltage control; Capacitors; Diodes; Power system control; Power system stability; Pulse width modulation; Pulse width modulation converters; Switches; Switching converters; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 2008. IECON 2008. 34th Annual Conference of IEEE

Conference_Location

Orlando, FL

ISSN

1553-572X

Print_ISBN

978-1-4244-1767-4

Electronic_ISBN

1553-572X

Type

conf

DOI

10.1109/IECON.2008.4758494

Filename

4758494