DocumentCode
1875026
Title
A hybrid static/rotary UPS system
Author
Windhorn, Allen
Author_Institution
Reliance Electr. Co., North Mankato, MN, USA
fYear
1990
fDate
11-16 March 1990
Firstpage
422
Lastpage
427
Abstract
An uninterruptible power supply (UPS) system is proposed. It uses a simple square-wave inverter driving a synchronous or induction motor-generator set to produce low-distortion isolated power. This power was shown to have advantages over both static UPS and standard rotary UPS systems, including reduced output impedance, reduced distortion with nonlinear loads, higher reliability, and better isolation. A 200 kVA system of this type installed at a large computer facility has resulted in significantly improved power availability.<>
Keywords
AC motors; electric generators; invertors; uninterruptible power supplies; 200 kVA; computer facility; hybrid static/rotary UPS system; induction motor-generator set; low-distortion isolated power; nonlinear loads; reduced distortion; reduced output impedance; reliability; square-wave inverter; synchronous motor generator set; uninterruptible power supply; Batteries; DC motors; Frequency; Impedance; Inverters; Maintenance; Power conditioning; Power system protection; Power system reliability; Uninterruptible power systems;
fLanguage
English
Publisher
ieee
Conference_Titel
Applied Power Electronics Conference and Exposition, 1990. APEC '90, Conference Proceedings 1990., Fifth Annual
Conference_Location
Los Angeles, CA, USA
Type
conf
DOI
10.1109/APEC.1990.66444
Filename
66444
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