A PFC pre-regulator with 110 V/220 V input voltage and high frequency isolation for UPS applications

Author

Torrico-Bascopé, Rene P. ; Oliveira, Demercil S., Jr. ; Branco, Carlos G C ; Antunes, Fernando L M

Author_Institution

Electr. Eng. Dept., Fed. Univ. of Ceara, Fortaleza

fYear

2005

fDate

6-6 Nov. 2005

Abstract

This work deals with the development of a PFC pre-regulator circuit with possibility of 110 V/220 V AC main input voltages, while maintaining the same efficiency for a wide load range. Other relevant features of this circuit topology are high frequency transformer isolation, soft commutation of the controlled switches, simple control strategy that can be implemented with well-known integrated circuits and the use of few batteries in series due to step-up stage. This circuit is recommended for on-line UPS applications and it is convenient for the development in rack-type structures due to small size and reduced weight. Qualitative analysis and experimental results obtained from 1.6 kW prototype are presented

Keywords

commutation; high-frequency transformers; power factor correction; uninterruptible power supplies; 1.6 kW; 110 V; 220 V; PFC preregulator; UPS; high frequency transformer isolation; integrated circuit; qualitative analysis; soft commutation; Batteries; Circuit topology; Electromagnetic interference; Frequency conversion; Power factor correction; Pulse width modulation; Switches; Switching circuits; Uninterruptible power systems; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 2005. IECON 2005. 31st Annual Conference of IEEE

Conference_Location

Raleigh, NC

Print_ISBN

0-7803-9252-3

Type

conf

DOI

10.1109/IECON.2005.1569030

Filename

1569030