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A three-phase off-line UPS system for transformer coupled loads

Title
A three-phase off-line UPS system for transformer coupled loads
Author
권병일
Keywords
current controlled inverter; inrush current; off-line UPS; transformer-coupled loads
Issue Date
2017-09
Publisher
IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
Citation
IEICE ELECTRONICS EXPRESS, v. 14, No. 20, Article no. 20170815
Abstract
A number of critical load applications depend on a UPS system to uphold the normal operation. As soon as any disruption happens on the utility, an off-line UPS system starts supplying the power to the load to prevent blackout. Nonetheless, during this process, a substantial inrush current can be observed for the transformer-coupled loads. To avoid this inrush current, we propose an off-line UPS system based on a current regulated voltage source inverter. The inverter of the proposed UPS system uses a current control scheme executed in a stationary frame to regulate the load current and eliminates the likelihood of the inrush current. To endorse the performance of the proposed UPS system, we constructed a small prototype to obtain the experimental results.
URI
https://www.jstage.jst.go.jp/article/elex/14/20/14_14.20170815/_article/-char/ja/http://repository.hanyang.ac.kr/handle/20.500.11754/103576
ISSN
1349-2543
DOI
10.1587/elex.14.20170815
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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