金卤灯电子镇流器分段线性控制策略的研究  

Study on Control Strategy for Electronic Ballast Based on Piecewise Linear Model of Metal Halide Lamp

作　　者：黄星星[1] 吉宇[1] 

机构地区：[1]东南大学电气工程学院,江苏南京210096

出　　处：《电工电气》2011年第4期10-13,18,共5页Electrotechnics Electric

摘　　要：由于金属卤化物灯(金卤灯)的负阻特性,为保证金卤灯可靠点亮和正常工作,在分析金卤灯分段线性模型的基础上,提出一种适用该特性负载的分段线性化控制策略。按该控制策略制作了一个三级式恒功率金卤灯电子镇流器并进行了实验,实验结果表明,采用分段控制策略的电子镇流器能够很好的匹配金卤灯负载阻抗的变化,具有电路结构简单、集成度高、可靠性好等特点。Due to negative resistance characteristics of metal halide lamp （MHL） and in order to make MHL be reliably switched on power and work normally, on the basis of analysis to MHL piecewise linear model, this paper raised a kind of control strategy based on piecewise linear suitable for its negative resistance characteristics. According to the control strategy, a three-step type constant power MHL electronic ballast was made to carry out experiment. Experiment result shows that adopting electronic ballast with piecewise linear control strategy can match changes of MHL load impedance very well, with simple circuit structure, high integration and good reliability etc features.

关 键 词：金属卤化物灯 电子镇流器 分段线性化 

分 类 号：TM923.61[电气工程—电力电子与电力传动]