Boost-type power factor correction system with three-level sigma-delta modulation

Author

Dallago, E. ; Passoni, M. ; Venchi, G.

Author_Institution

Dept. of Electr. Eng., Pavia Univ., Italy

Volume

1

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

137

Abstract

A boost PFC system using a three-level sigma-delta modulation technique, as an alternative to PWM based methods, is presented. The operating principle is based on proportionality between the average voltage over a switching period of the boost switching node (MOSFET drain), and the average input current, so as to make the input impedance equal to a resistance in the frequency range of interest for the PFC function. The system proposed is the first that can operate under both CCM and DCM conditions maintaining a very low THD. Theoretical results are confirmed by simulations and experimental results on a laboratory prototype

Keywords

DC-DC power convertors; harmonic distortion; power factor correction; sigma-delta modulation; CCM conditions; DCM conditions; PFC function; THD; average input current; boost-type power factor correction system; input impedance; three-level sigma-delta modulation technique; CADCAM; Circuits; Computer aided manufacturing; Delta-sigma modulation; Frequency; Impedance; Power engineering and energy; Power factor correction; Pulse width modulation; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2001. ICECS 2001. The 8th IEEE International Conference on

Print_ISBN

0-7803-7057-0

Type

conf

DOI

10.1109/ICECS.2001.957698

Filename

957698