A novel uninterruptible power supply system with sinusoidal input-output characteristics and simplified control circuit

Author

Ioannidis, G. ; Xanthoulis, E. ; Manias, S.N.

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece

Volume

2

fYear

34881

Firstpage

603

Abstract

In this paper a novel UPS topology is presented and analysed. The proposed UPS consists of three power stages. The first stage is a switch-mode rectifier which utilises a buck-boost power converter for active power correction. The second stage is a high frequency inverter that provides ohmic isolation and voltage matching. The third stage is a low frequency sinusoidal PWM inverter. Moreover, the proposed UPS exhibits sinusoidal input/output characteristics, high power density and a simple control circuit

Keywords

AC-DC power convertors; DC-AC power convertors; PWM invertors; harmonic distortion; power system harmonics; rectifying circuits; switching circuits; uninterruptible power supplies; UPS topology; active power correction; buck-boost power converter; control circuit; harmonics; high frequency inverter; low frequency sinusoidal PWM inverter; ohmic isolation; power density; power stages; sinusoidal input/output characteristics; switch-mode rectifier; uninterruptible power supply; voltage matching; Active filters; Capacitors; Filtering; Frequency conversion; Impedance; Inductors; Inverters; Power harmonic filters; Uninterruptible power systems; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 1995. ISIE '95., Proceedings of the IEEE International Symposium on

Conference_Location

Athens

Print_ISBN

0-7803-7369-3

Type

conf

DOI

10.1109/ISIE.1995.497254

Filename

497254