Title :
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
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;
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
DOI :
10.1109/PEDS.2007.4487901
