DSP control of high-power UPS systems feeding nonlinear loads

Author

Von Jouanne, Annette ; Enjeti, Prasad N. ; Lucas, Donald J.

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Volume

43

Issue

1

fYear

1996

fDate

2/1/1996 12:00:00 AM

Firstpage

121

Lastpage

125

Abstract

Many facilities, such as patient health care centers, data processing systems, and critical telecommunication links, rely on uninterruptible power supplies (UPS) to maintain a continuous supply of power in case of a line outage. In addition to requiring continuous power, many critical nonlinear loads are sensitive to incoming line transients and input harmonic voltage distortion. Conventional UPS systems operate to protect against such disturbances using complex filtering schemes, often employing large passive components. This paper presents the advantages of using real time digital signal processing (DSP) control of UPS systems. A DSP controlled UPS inverter and harmonic conditioning system is described and the performance is verified on a 150 kVA system

Keywords

PWM invertors; digital control; digital signal processing chips; power engineering computing; power system harmonics; real-time systems; uninterruptible power supplies; 150 kVA; DSP control; complex filtering schemes; critical telecommunication links; digital signal processing; harmonic conditioning system; high-power UPS systems; incoming line transients; input harmonic voltage distortion; inverter; nonlinear load; passive components; patient health care centers; real time control; uninterruptible power supplies; Control systems; Data processing; Digital signal processing; Medical services; Nonlinear control systems; Power harmonic filters; Power supplies; Power system harmonics; Telecommunication control; Uninterruptible power systems;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.481416

Filename

481416