Electronic Ballast Design of Metal-Halide Lamp Based on Single-Stage Single-Switch High Power Factor AC/DC Universal Input Converter

• Main Authors: Ping-Hsiu Chen, 陳平修
• Other Authors: Lon-Kou Chang
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/y53ywv

碩士 === 國立交通大學 === 電機與控制工程系所 === 92 === Metal-Halide Lamp is one of the High-Intensity-Discharge Lamps. It has stronger advantages in color rendering, lighting efficiency, and lifetime. However, the problems of long transition period required, extremely high starting ignition voltage, and acoustic resonance should be overcome. This thesis proposes a complete design of the electronic ballast for Metal-Halide Lamps. The whole design include three parts: (1) a single-stage single-switch high power factor AC/DC universal input converter in stead of the general two stage topology, in order to simplify the topology, (2) a full-bridge square wave inverter to avoid the acoustic resonance, (3) a igniting circuit to ignite the lamp. The AC/DC converter is controlled and driven by UC3842. The upper current limit and constant power control are designed to protect the Metal-Halide Lamp from burning out. The whole electronic ballast has worked well and the experiment results just match the theoretical ones.