Title :
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
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;
Conference_Titel :
Power Electronics and Drive Systems, 1997. Proceedings., 1997 International Conference on
Print_ISBN :
0-7803-3773-5
DOI :
10.1109/PEDS.1997.627481
