A neutral-point voltage balance technique for a diode-clamped three-level PWM rectifier based on fuzzy control

Author

Fang, Yu ; Xie, Yong ; Wei, Tengfei ; Yin, Mingxing ; Xing, Yan

Author_Institution

Inf. Eng. Coll., Yangzhou Univ., Yangzhou, China

fYear

2009

fDate

3-5 Nov. 2009

Firstpage

71

Lastpage

75

Abstract

The reason why the neutral point (NP) voltage unbalance is analyzed in detail and a Fuzzy Controller based on control index proposed. This way to balance the NP voltage is simple and need not extra hardware cost. Fuzzy controller can automatically and intelligently adapt the value of the control index and change the operation time duration of the small vectors. The Fuzzy controller design has been discussed and the experimental results verify that the proposed technique is correct and the balance of the NP voltage guarantees high power factor of TL-PWM rectifier.

Keywords

PWM rectifiers; control system synthesis; diodes; fuzzy control; TL-PWM rectifier; diode-clamped three-level PWM rectifier; fuzzy controller design; high power factor; neutral-point voltage balance technique; Automatic control; Capacitors; Circuits; Diodes; Fuzzy control; Intelligent control; Pulse width modulation; Reactive power; Rectifiers; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 2009. IECON '09. 35th Annual Conference of IEEE

Conference_Location

Porto

ISSN

1553-572X

Print_ISBN

978-1-4244-4648-3

Electronic_ISBN

1553-572X

Type

conf

DOI

10.1109/IECON.2009.5414784

Filename

5414784