DocumentCode
3846861
Title
Digital Control for Improved Efficiency and Reduced Harmonic Distortion Over Wide Load Range in Boost PFC Rectifiers
Author
Fu-Zen Chen;Dragan Maksimović
Author_Institution
Department of Electrical and Computer Engineering, Colorado Power Electronics Center, University of Colorado, Boulder, USA
Volume
25
Issue
10
fYear
2010
Firstpage
2683
Lastpage
2692
Abstract
This paper focuses on efficiency improvements and harmonic distortion reductions in digitally controlled single-phase boost power-factor-correction (PFC) rectifiers operating over wide load range. Based on a discontinuous conduction mode (DCM) detection circuit, a predictive current control law is modified to improve current shaping in both DCM and continuous conduction mode (CCM). Adaptive switching and adaptive frequency control techniques are introduced to reduce switching losses and improve efficiency at light loads. Experimental results are shown for a 300 W boost PFC rectifier.
Keywords
"Digital control","Harmonic distortion","Rectifiers","Adaptive control","Power factor correction","Circuits","Current control","Programmable control","Automatic frequency control","Switching loss"
Journal_Title
IEEE Transactions on Power Electronics
Publisher
ieee
ISSN
0885-8993
Type
jour
DOI
10.1109/TPEL.2010.2050702
Filename
5466192
Link To Document