An improved control strategy based on multiplier for CRM flyback PFC to reduce line current peak distortion

Author

Wang, Yuanyuan ; Zhang, Ya ; Mo, Qiong ; Chen, Min ; Qian, Zhaoming

Author_Institution

Dept. of Electr. Eng., Zhejiang Univ., Hangzhou, China

fYear

2010

fDate

12-16 Sept. 2010

Firstpage

901

Lastpage

905

Abstract

With high input voltage or light load, the peak of AC line current for critical conduction mode (CRM) flyback power factor Correctors (PFCs) appears notably distorted. In this paper, the reasons of line current distortion are investigated. Moreover, the relationship between line current peak distortion and high input voltage or light load is presented. Based on theoretical analysis, a simple improved control strategy is proposed. Finally, an experiment is carried out and the results convincingly demonstrate the effectiveness of the proposed method for reducing line current peak distortion.

Keywords

distortion; electric current control; multiplying circuits; power convertors; power factor correction; AC line current; CRM converters; CRM flyback PFC; critical conduction mode; flyback power factor correctors; high input voltage; improved control strategy; light load; line current peak distortion reduction; multiplier; Converters; Harmonic analysis; Inductors; Light emitting diodes; Power generation; Switches; Voltage control; Critical Conduction Mode (CRM); PF; THD; flyback; peak distortion;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2010 IEEE

Conference_Location

Atlanta, GA

Print_ISBN

978-1-4244-5286-6

Electronic_ISBN

978-1-4244-5287-3

Type

conf

DOI

10.1109/ECCE.2010.5617898

Filename

5617898