直流供电低压钠灯数字化电子镇流器设计  

Design of Digital Electronic Ballast for LPS Lamp with DC Power Supply

作　　者：刘汉奎[1] 张相军[1] 徐殿国[1] 

机构地区：[1]哈尔滨工业大学

出　　处：《电力电子技术》2007年第2期90-92,共3页Power Electronics

基　　金：哈尔滨工业大学MD2002跨学科交叉基金(HITMD.2002.12)~~

摘　　要：设计了一种基于Boost变换器和半桥LCC逆变电路的110V直流供电55W数字化低压钠灯电子镇流器(Electronic Ballast,简称EB),分析了镇流器的结构及其工作过程。用NE555定时器及运算放大器构成Boost变换器的PWM控制电路;用单片机对半桥逆变器进行PFM控制。通过软件控制实现灯启动、稳态工作控制及灯开路、短路状态的保护。给出了程序流程图,并对电子镇流器进行了仿真分析和试验验证。A 55W digital electronic ballast for Low Pressure Sodium（LPS） lamp with 110V DC supply based on Boost converter and half-bridge LCC inverter is presented in this paper.Its construction and operating process are analyzed.PWM control circuit of the Boost converter is composed with NE555 timers and operational amplifier.Microprocessor is used to realize the Pulse Frequence Modulation（PFM） control of the inverter.The software can ensure lamp＇s reliable igniting and constant operation,and realize lamp short-circuit and open-circuit protection.The flow chat of the software is given and the ballast is verified by simulation and experiment.

关 键 词：电子镇流器 变换器/低压钠灯 

分 类 号：TM464[电气工程—电器] TM921.5