Title :
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
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 Vdc and -200 Vdc, 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;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2004. APEC '04. Nineteenth Annual IEEE
Print_ISBN :
0-7803-8269-2
DOI :
10.1109/APEC.2004.1295904
