A high power factor symmetrical switched-mode power supply

Author

Gallo, Carlos A. ; Morais, Aniel S. ; Tofoli, Fernando L. ; Coelho, Ernane A A ; De Freitas, Luiz Carlos ; Farias, Valdeir J. ; Vieira, João Batista, Jr.

Author_Institution

Dept. of Electr. Eng., Fed. Univ. of Uberlandia, Brazil

Volume

2

fYear

2004

fDate

22-26 Feb. 2004

Firstpage

756

Abstract

This paper proposes a pre-regulator boost converter applied to a dc/dc converter in order to provide power factor correction. The combination of both stages results in a symmetrical switched power supply, which is composed of two symmetrical stages that operate at 100 kHz, as the individual output voltages are equal to +200 V_dc and -200 V_dc, the total output voltage is 400 Vdc and the total output power is 500 W. The power factor correction IC UC3854 is employed in the control strategy of the boost stage.

Keywords

DC-DC power convertors; control engineering computing; power factor correction; switched mode power supplies; -200 V; 100 kHz; 200 V; 400 V; 500 W; IC UC3854; dc-dc converter; high power factor; power factor correction; pre-regulator boost converter; switched-mode power supply; DC-DC power converters; Power factor correction; Power generation; Power supplies; Power system harmonics; Reactive power; Switched-mode power supply; Switching converters; Switching frequency; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2004. APEC '04. Nineteenth Annual IEEE

Print_ISBN

0-7803-8269-2

Type

conf

DOI

10.1109/APEC.2004.1295904

Filename

1295904