Title :
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
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;
Conference_Titel :
Industrial Electronics Society, 2005. IECON 2005. 31st Annual Conference of IEEE
Conference_Location :
Raleigh, NC
Print_ISBN :
0-7803-9252-3
DOI :
10.1109/IECON.2005.1569030
