摘要
作为一种高光效、长寿命电光源,无极灯系统由作为供电电源的电子镇流器和发光泡体组成,电子镇流器的输出特性和发光泡体的阻抗特性之间存在着复杂的相互关系,共同决定了无极灯系统的启动速度和发光效率等性能。为了对无极灯系统进行建模与分析,本文首先搭建实验平台,对2.65MHz下发光泡体的阻抗特性进行了测量;其次,本文基于无极灯电子镇流器的电路拓扑,结合发光泡体的阻抗,通过数值拟合建立了电子镇流器串联谐振并联负载输出级参数与输出电压之间的关联数学模型,并对电子镇流器输出级的基本状态变量进行了分析,联立相应的边界条件得到了电子镇流器输出电压和电流的解析表达;最后,对电子镇流器输出电压进行了数值计算、Pspice仿真和实验验证,三者结果基本吻合,验证了所建系统模型和分析结果的准确性。
As an electric light source which has high luminous etllclency and long llte time, electrodeless lamp system consists of electronic ballast as its power source and bubble. Complicated relationship exists between the output characteristic of electronic ballast and impedance characteristic of bubble, which decides the performance, including starting speed and luminous efficiency of electrodeless lamp system. To model and analyze the electrodeless lamp system, firstly in this paper, an experimental platform was built, the impedance characteristic of bubble under 2.65 MHz was measured. Secondly, based on the circuit topology of electronic ballast, the mathematical model between the series-resonant-parallel-load output stage parameters of electronic ballast and its output voltage is proposed, and the state variables of the output stage are analyzed, and the analytical solutions of the output voltage and output current of electronic ballast in association with relevant boundary conditions are found. Finally, numerical calculation, Pspice simulation and experiment were implemented. All of the three results agree well, which validates the accuracy of the model and analysis.
出处
《电工技术学报》
EI
CSCD
北大核心
2013年第4期13-19,共7页
Transactions of China Electrotechnical Society
基金
铁道部科技研究开发计划(J2011Z001)
神华集团与清华大学战略合作基础研究科研(20112000507)资助项目
关键词
无极灯
发光泡体
电子镇流器
建模
Electrodeless lamp
bubble
electronic ballast
modeling
