基于数字控制的两级金卤灯电子镇流器研究  

Research on Two-stage Electronic Ballast for Metal Halogen Lamp Based on Digital Control

作　　者：郑园圆[1] 林国庆[1] 唐建山[1] 

机构地区：[1]福州大学,福建福州350108

出　　处：《电力电子技术》2010年第8期91-92,共2页Power Electronics

基　　金：福建省自然科学基金资助(2008J0147)~~

摘　　要：详细分析了两级结构的金卤灯(MHL)电子镇流器的工作原理,提出一种适用于MHL负载特性的新型数字控制策略,实现了灯启动过程中的恒流和限流控制、稳态时的恒功率控制。采用差分平衡电路对灯电压进行取样,解决了悬浮的灯电压与控制电路的共地问题。制作了一台150 W的实验室样机对理论分析进行验证,实验结果验证了所提出的方案是可行的。The operation principle of two-stage metal halogen lamp（MHL）electronic ballast is analyzed.A new digital control strategy to match the load characteristics of MHL is proposed to realize constant and limit current control of startup process and constant power control in steady-state process.A differential amplifier is used to sample the lamp voltage,and to realize the common ground of the floating lamp signal and the drive circuit.A 150 W laboratory prototype is designed to validate the theoretical analysis.The experimental results verify the proposed method is feasible.

关 键 词：电子镇流器 金卤灯 数字控制 

分 类 号：TM923.61[电气工程—电力电子与电力传动]