DocumentCode :
3009772
Title :
Transfer Time Suppressor with Series-Parallel Connection
Author :
Arias, M. ; Hernando, M.M. ; Lamar, D.G. ; Rodríguez, M. ; Fernández, A.
Author_Institution :
Grupo de Sist. Electronicos de Alimentacion, Univ. de Oviedo, Gijon
fYear :
2009
fDate :
15-19 Feb. 2009
Firstpage :
1615
Lastpage :
1621
Abstract :
A line-interactive UPS has a higher efficiency than double conversion topology. It also has lower cost and size. Nevertheless, the transfer time between modes is an important drawback which makes impossible for line-interactive UPS to be implemented in certain applications. During this transfer time, which the UPS needs to detect the grid disturbance and to establish the stored-energy mode of operation, the load is still connected to the grid and, hence, under the influence of the mentioned disturbance. As a consequence, eliminating this transfer time without incrementing the cost or size of the UPS would represent an important advantage and would widen the fields of application in which this topology could be used. This paper proposes a system which can eliminate the voltage transient which affects the load during the transfer time. It is based on the typical topology of Dynamic Voltage Restorers (DVRs), but it has been deeply modified in order to be suitable for this application. The amount of energy to be delivered by the system and the duration of the disturbance in a UPS output are conditions completely different from those a DVR has. A prototype has been built and experimental results have been obtained in order to validate the proposed system.
Keywords :
uninterruptible power supplies; dynamic voltage restorers; line-interactive UPS; series-parallel connection; stored-energy mode; transfer time suppressor; Batteries; Capacitors; Costs; Feeds; Prototypes; Surge protection; Switches; Topology; Uninterruptible power systems; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2009. APEC 2009. Twenty-Fourth Annual IEEE
Conference_Location :
Washington, DC
ISSN :
1048-2334
Print_ISBN :
978-1-4244-2811-3
Electronic_ISBN :
1048-2334
Type :
conf
DOI :
10.1109/APEC.2009.4802884
Filename :
4802884
Link To Document :
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