【作者】 方辉；

【导师】 王晓明；

【作者基本信息】 哈尔滨工业大学 ， 控制科学与工程， 2007， 硕士

【摘要】 放电等离子体废气处理技术的进步和其飞速发展的工业化步伐,汽车尾气污染治理的迫切要求,以及传统处理技术与排放标准越来越严格的矛盾,构成了本文课题研究的背景。在相关技术、实验装置及工业化装置缺乏的情况之下,本文对汽车尾气处理的紧凑型全固态开关功率脉冲电源装置和系统开展了全面的研究。首先对紧凑型功率脉冲电源及应用的研究进展以及放电等离子体汽车尾气处理技术的研究进展进行评述,确定本文研究工作的发展平台。接下来对放电等离子体废气处理技术进行综合阐述,包括汽车尾气净化的方法及其对比、放电等离子体污染物处理机理、放电等离子体汽车尾气处理系统等内容,特别对低压直流供电的紧凑型功率脉冲电源、放电等离子体反应器的结构设计进行初步介绍。根据尾气处理对高压脉冲电源的技术要求,对主电路的工作原理进行阐述,对工作过程进行全面的数学分析,并用MATLAB数值仿真进行验证,之后基于PSpice对主电路进行动态过程和变负载输出特性的全面仿真分析研究,在此基础上分析了电源能量转化的效率。在高压脉冲电源的硬件电路设计中,主要进行了主电路元件参数计算和选型、功率脉冲变压器设计与校核、控制电路的设计、固态开关驱动与保护电路设计、EMC设计等项工作。在分析了高压脉冲电源尾气处理系统对控制的要求之后,给出了具体的控制方案和程序流程,进行了系统控制软件设计,特别介绍了峰值检测和软件滤波的实现方法。文中对样机的调试和实验进行说明,包括装置的结构、调试的步骤及实验结果和数据分析等内容。本文的研究是汽车尾气高压脉冲放电处理技术及其工业化的一个尝试,期望研究工作及其成果对相关领域研究的进程和我国相关技术工业化步伐的加快有促进作用。更多还原

【Abstract】 Under the background of the advancement of discharge plasma exhaust treatment technology and its rapid pace of industrialization, the urgent requirement of automobile exhaust treatment, the contradiction between the traditional purification method and the strict exhaust standards, and the lack of relevant technology, experiment and industrialized devices, this paper makes an investigation on compact all solid-state switches pulsed power supply and the system for automobile exhaust gas treatment.The paper reviews the development of compact pulsed power supply and its application as well as the discharge plasma exhaust treatment technology. The discharge plasma exhaust treatment technology is summarized, including the comparison of different purification methods, the principle of discharge plasma pollution treatment and the whole purification system construction. The construction design of discharge plasma reactor and the compact pulsed power supply based on low DC voltage are introduced.The working process of the main circuit is analyzed, including the technical requirements of pulsed power supply, the topology, the working principle, the mathematical analysis using MATLAB, the PSpice simulation of the dynamic process of main circuit and the output characteristics of varied loads, and the energy efficiency. The system hardware design contains the calculation of key components in the main circuit, the pulse transformer, the control circuit, the solid-state switches drive and protection circuit, the EMC etc.The software includes control strategy and program flows, especially the peak value detection and software filter methods. The prototype and relevant experiments are explained, including the construction of the device, the debugging process and the experiment results and data analysis.The research in this paper is a trial of discharge plasma automobile exhaust treatment technology and its industrialization. It is expected the work and results will do some help for the research in relevant field and improving the industrialization of this technoloy in our country.更多还原