A Single-Phase High-Power-Factor Neutral-pointer Clamped Multilevel Rectifier

Author

Xu, Yun ; Zou, Yunping ; Wang, Chengzhi ; Chen, Wei ; Liu, Bangyin

Author_Institution

Huazhong Univ. of Sci. & Technol., Wuhan

fYear

2007

fDate

27-30 Nov. 2007

Firstpage

1487

Lastpage

1491

Abstract

A single-phase rectifier based on neutral-clamped converter (NPC) is proposed to achieve high power factor, lower current distortion and low voltage stress of power semiconductors. The principle of single-phase three-level PWM rectifier is introduced. Neutral-point balance problem is an inherent problem of three-level converter, so a bangbang control method is schemed to control the capacities´ voltage. A dual close-loop control is used to make the rectifier have favorable dynamic and steady state performance, sinusoidal input current and unity power factor. Finally, the feasibility and validity of the proposed control scheme and neutral-point voltage control scheme are verified through the simulation using MATLAB.

Keywords

PWM power convertors; bang-bang control; power factor; rectifiers; PWM rectifier; bangbang control method; high power factor; neutral-pointer clamped multilevel rectifier; power semiconductors; single-phase high-power-factor rectifier; sinusoidal input current; steady state performance; three-level converter; unity power factor; Bridge circuits; Low voltage; Power harmonic filters; Power system harmonics; Pulse width modulation; Reactive power; Rectifiers; Stress; Thyristors; Voltage control; High-Power-Factor; Multilevel Rectifier; Neutral-pointer Clamped; Voltage balance Control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems, 2007. PEDS '07. 7th International Conference on

Conference_Location

Bangkok

Print_ISBN

978-1-4244-0645-6

Electronic_ISBN

978-1-4244-0645-6

Type

conf

DOI

10.1109/PEDS.2007.4487901

Filename

4487901