Multiple feedback loop control strategy for UPS system having active filter ability

Author

Oueidat, M. ; Sadarnac, D.

Author_Institution

Supelec Service EEI, Gif sur Yvette, France

fYear

1996

fDate

6-10 Oct 1996

Firstpage

450

Lastpage

453

Abstract

A simple uninterruptible power supply (UPS) configuration having active power filter ability (APF) is proposed in this paper. The proposed device can be operated in two modes, APF in normal operation and backup power modes in case of failure of the utility source. The proposed device has the advantages of only one power stage, compactness, high power factor and the total harmonic distortion performance is improved. Computer simulations and experimental results obtained from a low power model (50 VA) are carried out to verify the control strategy of system. Finally, the authors present the transient performance at the moment of the change of operation mode

Keywords

active filters; control system analysis computing; control system synthesis; feedback; harmonic distortion; power filters; power system harmonics; uninterruptible power supplies; voltage control; 50 MVA; THD; UPS system; active power filter; computer simulation; control simulation; high power factor; multiple feedback loop control strategy; total harmonic distortion; transient performance; voltage control design; Active filters; Analog-digital conversion; Batteries; Bridge circuits; Control systems; Feedback loop; Power harmonic filters; Power system harmonics; Uninterruptible power systems; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 1996. INTELEC '96., 18th International

Conference_Location

Boston, MA

Print_ISBN

0-7803-3507-4

Type

conf

DOI

10.1109/INTLEC.1996.573360

Filename

573360