A feasible high-performance single-phase UPS incorporating switched mode rectifier with high-frequency transformer link

Author

Hirachi, Katsuya ; Arai, Yasuhiro ; Yoshitsugu, Junji ; Gamage, Laknath ; Nakaoka, Mutsuo

Author_Institution

R&D Div., Yuasa Corp., Osaka, Japan

Volume

2

fYear

1997

fDate

26-29 May 1997

Firstpage

792

Abstract

It is essential for an uninterruptible power supply (UPS) to eliminate harmonic currents in its input current and to get unity power factor. The switched mode rectifier (SMR) with a high-frequency transformer link has promising characteristics as an AC/DC conversion circuit for UPS. It does not only eliminate harmonic currents but also provides an isolation between AC input and DC output with a small high frequency transformer. We applied the SMR for the development of UPS with capacity of 2 kVA, 3 kVA and 5 kVA. This paper presents circuit configurations and control strategies of the SMR and the test results of the developed UPS

Keywords

AC-DC power convertors; high-frequency transformers; power factor; power system harmonics; rectifying circuits; switching circuits; uninterruptible power supplies; 2 to 5 kVA; AC input; AC/DC conversion circuit; DC output; circuit configurations; control strategies; harmonic currents elimination; high-frequency transformer link; input current harmonics; isolation; single-phase UPS; switched mode rectifier; uninterruptible power supply; unity power factor; Batteries; Circuit testing; Frequency; Inductors; Inverters; Power supplies; Rectifiers; Switching circuits; Uninterruptible power systems; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems, 1997. Proceedings., 1997 International Conference on

Print_ISBN

0-7803-3773-5

Type

conf

DOI

10.1109/PEDS.1997.627481

Filename

627481