전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)
- 전력전자학회 2009년도 정기총회 및 추계학술대회 논문집
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- Pages.287-289
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- 2009
A Parallel Processing Uninterruptible Power Supply for Sudden Voltage Fluctuation for Computer Applications
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Lee, Su-Won
(Sungkyunkwan University) ;
- Ko, Sung-Hun (GAONSolution Inc.) ;
- Lee, Seong-Ryong (Kunsan National University) ;
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Jung, Yong-Chae
(Namseoul University) ;
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Won, Chung-Yuen
(Sungkyunkwan University)
- 발행 : 2009.11.27
초록
This paper deals with a parallel processing uninterruptible power supply (UPS) for sudden voltage fluctuation in computer applications to integrate power quality improvement, load voltage stabilization and UPS. To reduce the complexity, cost and number of power conversions, which results in higher efficiency, only one voltage-controlled voltage source inverter (VCVSI) is used. The system provides sinusoidal voltage at the fundamental value of 220V/60Hz for the load during abnormal utility power conditions or grid failure. Also, the system can be operated to mitigate the harmonic current and voltage demand from nonlinear loads and provide voltage stabilization for loads when sudden voltage fluctuation occur, such as sag and swell. System operation simulation demonstrates that the system protects against outages caused by abnormal utility power conditions and sudden voltage fluctuations and changes.
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