Peak current-controlled CRM flyback PFC converter with square of line voltage-compensated primary current envelope

Author

Junpeng He ; Jianping Xu ; Tiesheng Yan

Author_Institution

Sch. of Electr. Eng., Southwest Jiaotong Univ., Chengdu, China

Volume

51

Issue

9

fYear

2015

fDate

4 30 2015

Firstpage

684

Lastpage

686

Abstract

A peak current control technique for a flyback power factor correction (PFC) converter operating in critical conduction mode (CRM) is proposed. By using the square of the line voltage to compensate the peak current envelope of the primary current, the input current distortion of the traditional peak current-controlled CRM flyback PFC converter can be eliminated, and the unity power factor and low total harmonic distortion (THD) can be obtained. The operating principles and characteristics of the proposed peak current-controlled CRM flyback PFC converter are analysed. Experimental results of a 30 W prototype show that the power factor and THD of the proposed peak current-controlled CRM flyback PFC converter are better than those of the traditional peak current-controlled CRM flyback PFC converter.

Keywords

electric current control; harmonic distortion; power convertors; power factor correction; THD; critical conduction mode; current distortion; flyback unity power factor correction converter; line voltage-compensated primary current envelope; peak current-controlled CRM flyback PFC converter; power 30 W; total harmonic distortion;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2014.4420

Filename

7095739