A High Frequency Transformer Isolation Ups System With 110V/220V Input Voltage

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

doi:10.18618/REP.2006.3.239247

Authors

René P. Torrico-Bascopé Federal University of Ceará - UFC, Electrical Engineering Department, Campus do Pici, Bloco: 705, CEP: 60.455-760, Caixa Postal 6001, Fortaleza-CE-Brazil
Demercil S. Oliveira Jr. Federal University of Ceará - UFC, Electrical Engineering Department, Campus do Pici, Bloco: 705, CEP: 60.455-760, Caixa Postal 6001, Fortaleza-CE-Brazil
Carlos G. C. Branco Federal Centre for Technological Education of Ceará, Industry Area, Av. 13 de Maio, No 2081 – Benfica, CEP: 60.040-531, Fortaleza-CE-Brazil
Fernando L. M. Antunes Federal University of Ceará - UFC, Electrical Engineering Department, Campus do Pici, Bloco: 705, CEP: 60.455-760, Caixa Postal 6001, Fortaleza-CE-Brazil

DOI:

https://doi.org/10.18618/REP.2006.3.239247

Keywords:

double conversion UPS system, high frequency transformer, Power Factor Correction, soft-commutation

Abstract

This work proposes an isolated double conversion UPS with power factor correction using a high frequency transformer, and input voltages equal to 110V/220V. The arrangement is suitable to rack structures because it has small size and reduced weight. For both input voltages, the proposed converter has almost the same efficiency processing the same output power. Other relevant features are soft commutation of the controlled switches in the chopper and the boost stage, simple control strategy that can be implemented with well-known integrated circuits, and the use of few batteries in series due to the step-up stage. Qualitative analysis and experimental results obtained from 2kVA laboratory prototype are presented.

Downloads

Download data is not yet available.

Author Biographies

René P. Torrico-Bascopé, Federal University of Ceará - UFC, Electrical Engineering Department, Campus do Pici, Bloco: 705, CEP: 60.455-760, Caixa Postal 6001, Fortaleza-CE-Brazil

was born in Cochabamba, Bolivia, in 1967. He received the BSc. degree from San Simón University of Cochabamba, Bolivia, in 1992, and the MSc. and Dr. degrees from the Federal University of Santa Catarina, Florianópolis, Brazil, in 1994 and 2000, respectively. Currently, he is a professor of the Department of Electrical Engineering at the Federal University of Ceará, Fortaleza, Brazil. His main research interests include power supplies, power factor correction techniques, UPS systems, and renewable energy systems.

Demercil S. Oliveira Jr., Federal University of Ceará - UFC, Electrical Engineering Department, Campus do Pici, Bloco: 705, CEP: 60.455-760, Caixa Postal 6001, Fortaleza-CE-Brazil

was born in Santos, São Paulo, Brazil, in 1974. He received the BSc. and MSc. degrees in electrical engineering from the Federal University of Uberlândia, Uberlândia, Brazil, in 1999 and 2001, respectively, and the Dr. degree from the Federal University of Santa Catarina, Florianopolis, Brazil, in 2004. Currently, he is a professor of the Department of Electrical Engineering of the Federal University of Ceará, Fortaleza, Brazil. His interest areas include DC-DC conversion, soft commutation, and renewable energy applications.

Carlos G. C. Branco, Federal Centre for Technological Education of Ceará, Industry Area, Av. 13 de Maio, No 2081 – Benfica, CEP: 60.040-531, Fortaleza-CE-Brazil

was born in Fortaleza, Ceará, Brazil, in 1979. He received the BSc. and MSc. degrees in Electrical Engineering from Federal University of Ceará, Brazil, in 2002 and 2005, respectively. He has been professor at the Technological Education Federal Center of Piauí, Teresina, Brazil from February/2006 to August/2006. Currently, he is a professor of the Technological Education Federal Center of Ceará, Fortaleza, Brazil. His research interests include uninterruptible power supply systems, power factor correction circuits, soft-switching techniques, and converters for renewable energy sources.

Fernando L. M. Antunes, Federal University of Ceará - UFC, Electrical Engineering Department, Campus do Pici, Bloco: 705, CEP: 60.455-760, Caixa Postal 6001, Fortaleza-CE-Brazil

was born in Cascavel, Ceará, Brazil. In 1978 he received the BSc degree in Electrical Engineering from the Federal University of Ceará, and in 1983 the BSc. in Business Administration from the State University of Ceará. In 1980 he received the MSc degree from the University of São Paulo, São Paulo, Brazil, and in 1991 the PhD degree from Loughborough University of Technology (UK). He is a senior lecturer at the Federal University of Ceará, Fortaleza, Brazil, teaching power electronics and electric machines at graduate and undergraduate levels, and researching power electronics and applications related to renewable energy.

References

K. Hirachi, et al. "A Novel 3kVA Using a Switch Mode Rectifier", in INTELEC '90 - IEEE International Telecommunications Energy Conference Proceedings, pp. 392-399, 1990.

K. Hirachi, et al. "A Feasible High-Performance Single-Phase UPS Incorporating Switch Mode Rectifier with High-Frequency Transformer Link", in PEDS '97 - IEEE International Power Electronics and Drive Systems Conference Proceedings, vol. 02, pp. 792-797, 1997.

R. Yamada, et al. "High-Frequency Isolation UPS with novel SMR", in IECON '93 - IEEE Industrial Electronics, Control and Instrumentation Proceedings, vol. 02, pp. 1258-1263, 1993.

H. Pinheiro, et al. "AC Power Supply Based on Half-Bridge Resonant Converters", in CCECE '97 - IEEE Canadian Conference on Electrical and Computer Engineering, vol. 02, pp. 654-657, 1997.

J. Arau, et al. "A Novel Uninterruptible Power Supply System With Active Power Factor Correction", in IEEE Transactions on Power Electronics, vol.17, No3, pp. 405-412, May 2002. https://doi.org/10.1109/TPEL.2002.1004248 DOI: https://doi.org/10.1109/TPEL.2002.1004248

J. D. van Wyk, et al. "A Novel Unity Power Factor Low-EMI Uninterruptible Power Supply", in IEEE Transactions on Industry Applications, vol.34, No4, pp. 870-877, July/August 1998. https://doi.org/10.1109/28.703996 DOI: https://doi.org/10.1109/28.703996

G. V. Torrico Bascopé, I. Barbi. "Isolated Flyback-Current-Fed Push-pull Converter with Power Factor Correction", in Proc. of COBEP'97, pp. 159-1164, 1997.

A. Ikriannikov and S. Cuk. "Power Factor Correction: Shifting of Input 60Hz Rectification to the Secondary of Isolation Transformer", in Proc. of COBEP'99, pp. 173-178, 1999.

Philip C. Todd. "UC3854 Controlled Power Factor Correction Circuit Design", Unitrode Application Notes U-134, pp. 3-269 - 3-288, 1994.

G. V. Torrico-Bascopé, I. Barbi. "Single-Phase High Power Factor Variable Output Voltage Rectifier, Using the Buck+Boost Converter: Control Aspects, Design and Experimentation". in Proc. of COBEP'99, pp. 143-148, 1999.

R. Torrico-Bascopé, I. Barbi. "Dual-Bridge DC-DC Converter with Soft Switching Features". in APEC'01 - IEEE Applied Power Electronics Specialists Proceedings, vol. 02, pp. 722 - 727, 2001.

F. K. A. Lima, C. M. T. Cruz, F. L. M. Antunes. "A Family of Turn-On and Turn-Off Non-Dissipative Passive Snubbers for Soft-Switching Single-Phase Rectifier with Reduced Conduction Losses", in PESC'04 - IEEE Power Electronics Specialists Conference Proceedings, CD-Rom, pp. 3745 - 3750, 2004.

R. P. Torrico-Bascopé, D. S. Oliveira Jr., C. G. C. Branco, F. L. M. Antunes. "A PFC Pre-Regulator with 110V/220V input voltage and high frequency isolation for UPS applications", in IECON'05 - IEEE Industrial Electronics Society Annual Conference Proceedings, CD-Rom, pp. 936-941, 2005. https://doi.org/10.1109/IECON.2005.1569030 DOI: https://doi.org/10.1109/IECON.2005.1569030

D. C. Martins, I. Barbi. Introdução ao Estudo dos Conversores CC-CA, Edição dos Autores, pp. 375-430, 2005.