- 作者: WEN-LUNG LU ; SHENG-NIAN YEH
- 中文摘要: This paper is concerned with the design and implementation of high performance uninterruptible power supplies (UPS) for fluorescent lamps with electronic ballast. The UPS design is based on the capacity and voltage ratings of the lighting equipment. The current-predicted control technique is used to control the half-bridge switch-mode rectifier so as to improve the power factor and reduce the current harmonics on the utility side. The boost/buck DC chopper is designed to charge and discharge batteries. When the utility is normal, the half-bridge switch-mode rectifier provides DC power to both the electronic ballast and the battery for the purpose of charging. This yields low current harmonic distortion and a near-unity power factor for the utility side. When the utility fails, the battery discharges quickly in order to supply DC power to the electronic ballast. A single-chip microcontroller is used to implement digitized control of the proposed system. Simulated and experimental results for a 500W prototype are presented to justify the analysis.
- 英文摘要: --
- 中文關鍵字: uninterruptible power supply, half-bridge switch-mode rectifier, boost/buck, DC chopper
- 英文關鍵字: --