3상 오프라인 무정전 전원 시스템의 돌입전류 제거

Title
3상 오프라인 무정전 전원 시스템의 돌입전류 제거
Other Titles
Inrush Current Elimination for a Three-Phase Off-Line UPS System
Author
권병일
Issue Date
2015-07
Publisher
대한전기학회
Citation
2015 대한전기학회 제46회 하계학술대회. Page. 944-945
Abstract
Many sensitive loads always rely on UPS systems to maintain continuous power during abnormal utility power conditions. As any disturbance occurs at the utility side, an off-line UPS system takes over the load within a quarter cycle to avoid a blackout. However, the starting of the inverter can root the momentous inrush current for the transformer installed before the load, due to its magnetic saturation. The consequences of this current can be a reduction of line voltage and tripping of protective devices of the UPS system. Furthermore, it can also damage the transformer and decrease its lifetime by increasing the mechanical stresses on its windings. To prevent the inrush current, and to avoid its disruptive effects, this paper proposes an off-line UPS system that eliminates the inrush current phenomenon while powering the transformer coupled loads, using a current regulated voltage source inverter (CRVSI) instead of a typical voltage source inverter (VSI). Simulations have been performed to validate the operation of proposed off-line UPS system.
URI
http://www.dbpia.co.kr/Journal/ArticleDetail/NODE06510924http://repository.hanyang.ac.kr/handle/20.500.11754/101266
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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