超高压汞灯数字电子镇流器设计与实现

Design and Implementation of Digital Electronic Ballasts for Ultra-High Pressure Mercury Lamps

摘要: 超高压汞灯是投影仪、舞台光束灯和探照灯中广泛使用的一种绿色光源。本文以AVR单片机为控制核心，以BUCK变换电路与全桥逆变电路为驱动电路，以LC谐振电路为点火电路，采用三级式电路拓扑结构进行了软硬件设计与实现，研发了一款330 W超高压汞灯电子镇流器，并阐述了设计思路、工作原理、样机研发与实验实测结果。结果显示，该电子镇流器启动过程平稳、输出功率恒定、光输出特性稳定、温度特性良好、无声共振现象，技术性能及环境适应性均达到实际使用要求，在工业生产中具有广泛的应用前景。

Abstract: Ultra-high pressure mercury lamp is a green light source widely used in projectors, stage beam lamps and searchlights. This paper develops a 330 W electronic ballast for the ultra-high pressure mercury lamp with AVR micro-controller as the control core, BUCK converter circuit and full-bridge inverter circuit as the driving circuit, LC resonant circuit as the ignition circuit, and three-stage circuit topology for software and hardware design and implementation, and elaborates the design idea, working principle, prototype development and experimental measurement results. The results show that the electronic ballast has a smooth starting process, constant output power, stable light output characteristics, good temperature characteristics, and no acoustic resonance phenomenon, and the technical performance and environmental adaptability meet the practical requirements, which has a wide application prospect in industrial production.