Ultra High-Pressure Mercury Lamp Electronic Ballast for LCD Projection Systems

• Main Authors: Chou-Chuan Kan, 闞周傳
• Other Authors: Huang-Jen Chiu
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/31520597742205698421

碩士 === 中原大學 === 電機工程研究所 === 95 === Because of their much higher luminous efficacy, better color rendition index, and longer lifetime than conventional halogen lamps, Ultra high pressure mercury lamps have been used in various commercial applications such as LCD projectors and street lighting. In this thesis, a single-stage phase-shifted full-bridge high-frequency electronic ballast is studied for driving Ultra high pressure mercury lamps in LCD projection systems. High efficiency, high power factor, and lamp current regulation can be achieved with the studied single-stage electronic ballast with zero-voltage switching features. Operating principles and design considerations for the proposed electronic ballast are analyzed and described in details. A laboratory prototype is designed and implemented. The simulation and experimental results for the laboratory prototype are shown to verify the feasibility of the proposed electronic ballast.