Stability improvement of constant voltage transformer for triport UPS system

Author

Harada ; Ji, Y. ; Katayama, Y. ; Chen, C.J. ; Nakamizo, T.

Author_Institution

Dept. of Electron., Kyushu Univ., Fukuoka, Japan

fYear

1988

fDate

30 Oct-2 Nov 1988

Firstpage

536

Lastpage

541

Abstract

A novel method for improving the stability of the AVR (automatic voltage regulator) constant voltage transformer for triport UPS (uninterruptible power supply) systems is introduced. An active filter with an operational amplifier as the feedback element for controlling the AVR is shown to reduce the system instability; this device is more compact and economical than the alternative magnetic feedback amplifier. Experimental and simulation results demonstrate the effectiveness of active filter feedback of a higher order for suppressing the instability

Keywords

active filters; feedback; operational amplifiers; potential transformers; stability; uninterruptible power supplies; voltage control; voltage regulators; active filter; automatic voltage regulator; constant voltage transformer; feedback element; operational amplifier; simulation results; stability; stability improvement; triport UPS system; uninterruptible power supply; Active filters; Automatic control; Control systems; Feedback; Operational amplifiers; Power system economics; Regulators; Stability; Uninterruptible power systems; Voltage transformers;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 1988. INTELEC '88., 10th International

Conference_Location

San Diego, CA

Type

conf

DOI

10.1109/INTLEC.1988.22404

Filename

22404