【作者】 陈诚；

【导师】 钱照明；

【作者基本信息】 浙江大学 ， 电力电子与电力传动， 2010， 硕士

【摘要】 节能减排已经成为一个全球性的话题,其中绿色照明正引起了越来越多的关注。高强度气体放电灯光效较高、显色性较好、发光集中,是一种绿色照明光源,它的应用范围越来越广,而与之配套的电子镇流器的性能是影响放电灯效果的关键因素。目前关于金属卤化物灯及其镇流器的研究已经较多,但是针对高压钠灯及其镇流器的研究及设计相对较少,而钠灯又广泛应用于道路、机场的室外大型照明场合,国外已经有利用高压钠灯模拟太阳光进行大棚照明培育植物的应用。本文首先介绍了课题的研究背景,包括高强度气体放电灯的分类和应用,其中对高压钠灯的结构和特点做了详细的介绍。同时对与高强度气体放电灯配套的电子镇流器的国内外研究现状进行了概述,包括了目前研究的几大难点和热点,由此引出本文的研究内容。关于气体放电灯的建模一直是研究的难点之一,作为一种比较特殊的负载,气体放电灯不仅具有一般电气负载的普遍特性,还有非线性特性,建立合理的模型对这个特殊的负载进行描述对电路设计工作者有很大的帮助,它能够使设计者更有针对性的进行设计。本文的第二章将对高压钠灯的模型进行研究与分析,包括钠灯的稳态模型和启动模型,并且基于经典的Francis方程提出了一种全新的数学模型,新型模型更好地描述了灯管内电子浓度与灯电导的关系。仿真和实验波形证明此模型较好的反映了高压钠灯的特性,是实用的、可靠的。高压钠灯电子镇流器整机拓扑种类很多,但是各种拓扑中逆变电路总是核心的部分,是决定电子镇流器性能好坏的关键部分。本文第三章对高压钠灯电子镇流器的逆变电路进行研究与分析,建立逆变级谐振电路数学模型,结合高压钠灯模型进行仿真。第五小节给出了GE 400V/600W高压钠灯电子镇流器逆变电路设计实例,验证了设计的正确性。功率电子产品中,电磁干扰是一大不可避免的难题。电子镇流器中采用了电力电子的开关技术,在高频时电流变化率很大,会产生很强的电磁噪声信号,对电网造成污染,所以如何减小电磁干扰、优化性能是电子镇流器能够广泛推广和产品化的关键问题。基于此,在本文第四章中对大功率高压钠灯电子镇流器进行了EMC分析,介绍了电子镇流器EMI滤波器的设计步骤。利用线性阻抗稳定网络测得电子镇流器的噪声,然后据此设计滤波器的参数,并给出了一个设计例子,包括理论分析、参数选择、实验波形,验证了此EMI滤波器的实用性。更多还原

【Abstract】 As the result of the globalization of energy-saving and emission-reduction, Green Lighting Projects raise more and more concerns. HID lamp is one of green lighting source. Therefore, development of the driving circuit of the lamp, namely the electronic ballast has become an important research object. A lot of researches focus on Metal Halide Lamps and ballast currently, but few for High Pressure Sodium Lamps and its ballast. However, Sodium Lamps are widely used in road, airport and Greenhouse Lighting.The first part of the thesis states the research background, including the classification, application, structure and feature of HID lamps. Then the current research situation of ballast at domestic and abroad is given, including some difficulties and hotspots.Modeling for HID lamp has always been one of the difficulties. As a special load, HID lamp has nonlinearity properties. To build a proper model for this special load must be a great help for designer. Chapter two introduces the research and analysis on the High Pressure Sodium lamp model, including stable model and start-up model. A new mathematical model which gives a better description to the relation of electron concentration and lamp conductance based on classic Francis Formula is demonstrated in this chapter. Simulation and experiment have proved its reliability and practicality.There are many kinds of HID lamp ballast topology, and the inverter circuit always plays the core role for each kind. Chapter three study on the inverter circuit, and introduces a mathematical model of resonant circuit. Simulation result with new High Pressure Sodium lamp mathematical model is given. An example of design of GE 400V/600W High Pressure Sodium Lamp ballast is demonstrated with experiment to verify the analysis..EMI is an unavoidable problem in power electronic products especially in high-frequency working situation. Chapter four introduces the EMC analysis on 600W High Pressure Sodium lamp ballast. A procedure for designing ac line EMI filters for HPS ballast is presented. This procedure is based on the analysis of conducted EMI problems and the use of LISN. Design examples are given, and results are experimentally verified.更多还原