Open AccessPeak current‐controlled CRM flyback PFC converter with square of line voltage‐compensated primary current envelope
Author(s) -
He Junpeng,
Xu Jianping,
Yan Tiesheng
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2014.4420
Subject(s) - flyback converter , total harmonic distortion , flyback transformer , power factor , flyback diode , current (fluid) , buck converter , buck–boost converter , voltage , electrical engineering , control theory (sociology) , electronic engineering , materials science , boost converter , engineering , computer science , transformer , control (management) , artificial intelligence
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.