High real output power on-line UPS system with built-in reactive power compensation

T. J. Liang, J. L. Shyu, J. F. Chen

研究成果: Conference contribution

9 引文 斯高帕斯(Scopus)

摘要

A circuit topology is proposed for single-phase on-line UPS systems. The proposed circuit incorporates a built-in bidirectional converter which provides power factor correction and active power filtering. The input stage, based on a bidirectional full-bridge converter, functions as a rectifier with unity power factor correction for normal ac line mode operation, and as an active power filter for outage mode operation. During input power failure, the DC/AC inverter output stage supplies real power from the battery bank to the critical load. Simultaneously, the bidirectional AC/DC converter functions as an active power filter, providing reactive power to the load. Thus, the real power capability is improved compared to conventional on-line UPS. Simulation of the proposed topology shows, for normal mode, a well regulated sinusoidal output voltage with minimum harmonic distortion for nonlinear loads, near-unity power factor and low-harmonic current for ac line. For outage mode, simulation shows a sinusoidal output voltage with low total harmonic distortion and a near-unity output power factor with a high utilization factor. Simulation results confirm the feasibility and features of the proposed UPS scheme.

原文English
主出版物標題PESC Record - IEEE Annual Power Electronics Specialists Conference
頁面1555-1560
頁數6
DOIs
出版狀態Published - 2001 十月 22
事件2001 IEEE 32nd Annual Power Electronics Specialists Conference - Vancouver, BC, Canada
持續時間: 2001 六月 172001 六月 21

出版系列

名字PESC Record - IEEE Annual Power Electronics Specialists Conference
3
ISSN(列印)0275-9306

Other

Other2001 IEEE 32nd Annual Power Electronics Specialists Conference
國家/地區Canada
城市Vancouver, BC
期間01-06-1701-06-21

All Science Journal Classification (ASJC) codes

  • 建模與模擬
  • 凝聚態物理學
  • 能源工程與電力技術
  • 電氣與電子工程

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