DBD型高效臭氧发生器机理的研究

发布时间：2019-03-18 20:41

【摘要】：臭氧是一种非常容易分解，状态并不稳定的物质，而且具有杀菌能力和较强的氧化作用。产生臭氧的方法多种多样，其中属介质阻挡放电法使用最为普遍，简称DBD法。随着经济的不断发展以及科学技术的不断提高，，臭氧的应用变得愈来愈普遍，本文在这种背景之下，对DBD型的高效臭氧发生器的机理进行了研究。首先，本文对臭氧的特性以及相关应用作了简要的介绍。通过阐述国内外臭氧发生器的发展，表明选用高频高压逆变电源是非常合理的。另外，本文主要研究的是DBD型的高效臭氧发生器，对介质阻挡放电的基本原理以及其电极结构进行了一定地说明，并提出了其通用等效电路的原理图。其次，由于在制作臭氧发生器时，其介质材料对其性能有着至关重要的作用。因此本文接着对高效臭氧发生器材料需要满足的介电常数、介质损耗、电阻率、机械性能、耐压强度、导热性以及介质层厚度等方面进行了研究，对于提高臭氧产量提供了很大的帮助。考虑到在放电电源处于高频状态时，臭氧产量会增加，另外，臭氧发生器的负载具有电容特性，因此，本文在研究臭氧发生器时，采用的是高频电源。对负载谐振型逆变器进行了分类和比较，通过比较得知，使用电压型逆变器更有利于改良逆变器的工作效率，从而增加臭氧产量。本文也对逆变电源的控制方式进行了研究。通过对比，最终确定应用电流过零锁相感性PWM的控制方式。文章最后通过先对整流滤波电路以及PWM逆变电路进行仿真和分析，从而得到臭氧发生器主电路的仿真模型图，并对其内部每个模块进行参数的计算和设置，最后，用MATLAB软件对其进行仿真，从而得到其仿真结果图。
[Abstract]:Ozone is a very easy to decompose, state is not stable, but also has bactericidal ability and strong oxidation. There are many methods to produce ozone, among which dielectric barrier discharge method is the most popular method, abbreviated as DBD method. With the development of economy and the improvement of science and technology, the application of ozone has become more and more popular. Under this background, the mechanism of high efficiency ozone generator of DBD type has been studied in this paper. Firstly, the characteristics and applications of ozone are briefly introduced in this paper. By expounding the development of ozone generator at home and abroad, it is shown that it is very reasonable to choose high frequency and high voltage inverter power supply. In addition, this paper mainly studies the DBD type high efficiency ozone generator, explains the basic principle of dielectric barrier discharge and its electrode structure, and puts forward the schematic diagram of its general equivalent circuit. Secondly, when making ozone generator, its dielectric material plays an important role in its performance. Therefore, the dielectric constant, dielectric loss, resistivity, mechanical properties, compressive strength, thermal conductivity and thickness of dielectric layer are studied in this paper. It is of great help to increase ozone production. Considering that the output of ozone will increase when the discharge power is in the high frequency state and the load of the ozone generator has the capacitance characteristic, the high frequency power supply is used in the study of the ozone generator in this paper. Based on the classification and comparison of load resonant inverters, it is found that the use of voltage source inverters is more beneficial to improve the working efficiency of the inverters and thus increase the ozone production. The control mode of inverter power supply is also studied in this paper. Through comparison, the control mode of current zero-crossing phase-locked inductive PWM is finally determined. Finally, through the simulation and analysis of rectifier filter circuit and PWM inverter circuit, the simulation model diagram of the main circuit of ozone generator is obtained, and the parameters of each module are calculated and set. Finally, the simulation model of the main circuit of ozone generator is obtained. It is simulated with MATLAB software, and the simulation result diagram is obtained.
【学位授予单位】：武汉工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM464

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