An unity power factor operation symmetrical power supply

Author

Tatibana, G.S. ; Treviso, C.H. ; Farias, V.J. ; Vieira, J.B., Jr. ; de Freitas, L.C.

Author_Institution

Ericsson Telecom AB, Sao Bernardo, Brazil

Volume

2

fYear

1997

fDate

7-11 Jul 1997

Firstpage

595

Abstract

This paper presents an AC/DC power converter which can operate as a symmetrical power supply. The AC input voltage and current waveforms are closely in phase and present a very low harmonic distortion. Consequently, the proposed power converter is able to work with unity power factor. A symmetrical output voltage source was obtained by associating Cuk and SEPIC converters using a common input stage. A 500 watts prototype operating at 100 kHz fixed switching frequency was implemented. PSPICE simulation and a laboratory prototype operating with open and closed loops was realized and the results have proved the operating principles of the structure and the implemented control strategy

Keywords

AC-DC power convertors; SPICE; circuit analysis computing; harmonic distortion; power supplies to apparatus; power system harmonics; rectifying circuits; software packages; switching circuits; 150 kHz; 500 W; AC input current waveform; AC input voltage waveform; AC/DC power converter; Cuk converters; PSPICE; SEPIC converters; circuit simulation; computer simulation; low harmonic distortion; operating principles; switching frequency; symmetrical power supply; unity power factor operation; Analog-digital conversion; Harmonic distortion; Laboratories; Power supplies; Prototypes; Reactive power; SPICE; Switching frequency; Virtual prototyping; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 1997. ISIE '97., Proceedings of the IEEE International Symposium on

Conference_Location

Guimaraes

Print_ISBN

0-7803-3936-3

Type

conf

DOI

10.1109/ISIE.1997.649029

Filename

649029