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단상 UPS 시스템의 모드 절환 시퀀스 및 제어Mode Transfer Sequence and Control of Single-phase UPS System
- Other Titles
- Mode Transfer Sequence and Control of Single-phase UPS System
- Issue Date
- 2014
- Publisher
- 한국조명.전기설비학회
- Keywords
- AC/DC PWM Converter; UPS; ESS; Mode Transfer Sequence; Bi-Directional Power Control
- Citation
- 조명.전기설비학회논문지, v.28, no.12, pp.108 - 115
- Indexed
- KCI
- Journal Title
- 조명.전기설비학회논문지
- Volume
- 28
- Number
- 12
- Start Page
- 108
- End Page
- 115
- ISSN
- 1229-4691
- Abstract
- Recently, Uninterruptible power supply(UPS) is spotlighted from concern about black out, due to reserve power problem caused by increased power consumption. When fault occurs on the grid, UPS system supplies power to loads instead of the grid. Also, it is an advantage of possible operation as Energy storage system(ESS). Bi-directional power control of AC/DC Pulse width modulation(PWM) converter is essential for grid-connected UPS system. And, mode transfer control has to be performed considering phase and dynamic characteristic under grid condition. In this paper, control of mode transfer and bi-directional power control of AC/DC PWM converter is proposed for UPS system. Also, it is verified by simulation and experimental results.
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