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Line-interactive Uninterruptible Power Supply System Eliminating the Inrush Current Phenomenon

Title
Line-interactive Uninterruptible Power Supply System Eliminating the Inrush Current Phenomenon
Author
권병일
Keywords
uninterruptible power supply system; line-interactive; inrush current; current regulated voltage source inverter; MITIGATION TECHNIQUE; UPS; LOAD; CAPABILITIES; COMPENSATOR; UNIVERSAL; FILTER
Issue Date
2016-05
Publisher
TAYLOR & FRANCIS INC
Citation
ELECTRIC POWER COMPONENTS AND SYSTEMS, v. 44, No. 11, Page. 1203-1214
Abstract
Numerous critical load applications rely upon a line-interactive uninterruptible power supply system to maintain power during outages as well as during under- and over-voltage utility conditions. When any disturbance occurs at the utility side, the line-interactive uninterruptible power supply system takes over the load within a few milliseconds to avoid interruption. However, during this transition of load, a significant inrush current occurs due to the magnetic saturation of the load transformer. The inrush current phenomenon causes reduced line voltages and sometimes activates the over-current protection of the uninterruptible power supply system. This article proposes a new line-interactive uninterruptible power supply system that eliminates the inrush current phenomenon by connecting a standard current-regulated voltage source inverter to the secondary of the load transformer. During any transient condition at the utility side, the load current is monitored and regulated to achieve a seamless compensation or transition of load. Experimental results are obtained for a prototype during a number of possible irregular utility power conditions to endorse the performance of the proposed uninterruptible power supply system.
URI
https://www.tandfonline.com/doi/abs/10.1080/15325008.2015.1137996http://hdl.handle.net/20.500.11754/53753
ISSN
1532-5008; 1532-5016
DOI
10.1080/15325008.2015.1137996
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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