380V/600W及新型两级低频方波HID灯电子镇流器的研究

【作者】 赵军；

【导师】 钱照明；

【作者基本信息】 浙江大学 ， 电力电子与电力传动， 2004， 硕士

【摘要】 随着绿色照明工程的发展，高强度气体放电灯作为一种节能、高效的新型电光源，正越来越显示出其优越性。因此，与之相配套的高强度气体放电灯电子镇流器的开发也成为了研究热点。电子镇流器凭借其节能、轻便等一系列优点将逐步替代传统的电感式镇流器。 本文通过对一种380V高电压输入600W高频电子镇流器以及一种新型的低频方波电子镇流器的开发研究对高强度气体放电灯电子镇流器中的一系列问题展开了详细的讨论。 论文的绪论部分简要地介绍了电光源的分类及特点，着重介绍了高强度气体放电灯的电特性，并讲述了电子镇流器的工作原理、优越性及其最新的发展动态等。 为了更好地理解灯的负阻特性并分析电子镇流器系统的稳定性问题，论文第二章着重从灯的频域模型出发分析了闭环控制下的低频方波电子镇流器系统的稳定性问题。 论文第三章详细阐述了380V高电压输入600W高频电子镇流器样机的设计过程，并对其进行了仿真及实验验证。 高强度气体放电灯在高频工作时特有的声谐振现象大大阻碍了高强度气体放电灯电子镇流器的发展。论文第四章从物理机理出发讲述了声谐振产生的原因，声谐振的危害及表现特性，最后对目前用于解决声谐振现象的各种对策进行了总结。 论文最后对低频方波电路的发展概况作了综述，在此基础上提出了一种新型的两级式低频方波电子镇流器，并对其工作原理及控制电路进行了详细的分析，最后通过仿真和实验结果对电路进行了验证。更多还原

【Abstract】 As the development of Green Lighting Project, the high intensity discharge (HID) lamp is drawing close attention due to its energy saving and high lighting efficiency. Therefore the development of the drive circuit of the lamp, namely ballast has become an important research point. Because of the excellence in energy saving, light weight, etc., electronic ballast will gradually take the place of traditional electromagnetic (EM) ballast.A series of problems in the latest developments of electronic ballast are discussed in the thesis based on the detail design of the 600W electronic ballast provided with 380V high voltage input and the research of a novel low-frequency electronic ballast.At the beginning of the thesis, characteristics of different lighting sources, especially the electronic characteristics of HID lamps, are introduced. The operation principles, superiority and developments of electronic ballast are also presented.In order to understand the lamp’s negative incremental impedance of characteristics and analyze the stability of Ballast/Lamp system clearly, the low-frequency ballast system stability with closed loop are analyzed based on the HID lamp frequency-domain model in Chapter II.Detail design process of a 380V/600W high frequency electronic ballast for High Pressure Sodium lamp is given in Chapter III. It’s verified by simulation and experiment.There are acoustic resonance phenomena in HID lamps when driven at high frequency, which prohibits the developments of electronic ballast of HID lamps. Chapter IV investigates the mechanism of acoustic resonance, its effects and its characteristics. Finally all kinds of methods to eliminate acoustic resonance are reviewed.At the end of the thesis, the review on the developments of low-frequency square wave electronic ballast is given. Then a novel two-stage low-frequency square wave electronic ballast for HID lamps is proposed with detailed proposed circuit analysis and control circuit description. Finally simulation and experimental results are provided to verify its superiority.更多还原