DC-DC开关电源中的电磁兼容分析与设计

发布时间：2018-02-05 20:20

  本文关键词： DC-DC开关电源 电磁兼容 EMI滤波 腔体设计　出处：《南京理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：目前,随着电力电子等技术的发展,对高性能电力需求不断增加,使得大量开关电源变换器被广泛用于军事、工业、商业等领域。性能优异的开关电源变换装置可以提供给设备优质的电能,从而极大限度地提升产品质量。但同时,为了达到提升电能质量以及产品整体性能的目的,开关器件的开关频率不断增加,开关电源体积不断减小,由此而带来的电磁兼容问题成为制约开关电源发展的一个关键技术难点。本文针对高性能开关电源的电磁兼容性问题,研究了以下三个部分内容：1、DC-DC开关电源的架构。通过对buck型开关电源的原理进行分析,找出影响开关电源性能的关键点,进行针对性设计,从而对电路进行优化,提高开关电源的工作性能。2、滤波电路的设计。通过对应用对象的分析,根据应用对象的工作频率来设计滤波电路,从而满足工作要求。3.腔体结构的设计。通过对影响电磁兼容性因素的分析,设计自己的腔体结构,提高电源的电磁兼容性。基于以上的研究,制作了样机并进行相关实验,给出了实验结果和实验性能参数。
[Abstract]:At present, with the development of power electronics and other technologies, the demand for high performance power is increasing, which makes a large number of switching power converters widely used in military and industry. Commercial and other fields. Excellent switching power conversion device can provide high quality electrical energy to equipment, thus greatly improve the quality of products. But at the same time. In order to improve the power quality and the overall performance of the product, the switching frequency of switching devices is increasing, and the volume of switching power supply is decreasing. The electromagnetic compatibility (EMC) problem has become a key technical difficulty that restricts the development of switching power supply. In this paper, the following three parts: 1 are studied in order to solve the EMC problem of high performance switching power supply. The structure of DC-DC switching power supply. Through the analysis of the principle of buck switching power supply, the key points that affect the performance of switching power supply are found out, and the targeted design is carried out, so as to optimize the circuit. Through the analysis of the application object, the filter circuit is designed according to the working frequency of the application object. In order to meet the requirements of the work. 3. Cavity structure design. Through the analysis of the factors affecting electromagnetic compatibility, design their own cavity structure, improve the electromagnetic compatibility of power supply. Based on the above research. The prototype is made and related experiments are carried out. The experimental results and experimental performance parameters are given.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN86;TN03
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本文编号：1492687