Title :
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
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;
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
DOI :
10.1109/ECCE.2010.5617898
