一种快速可调脉冲电源的研制

发布时间：2018-02-15 19:29

本文关键词： 等离子体脉冲电源快速可调 TMS320F2812　出处：《安徽理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：目前应用交流电源作为驱动电源来驱动放电装置在大气压下进行DBD放电是产生等离子体的一个有效的途径,但由于交流电源自身安全性等的缺点,这就很大的限制了以交流电源作为驱动电源的DBD放电装置产生等离子体的应用范围。为了解决上述交流电源安全性问题,本文在一开始设计了一种直流大气压冷等离子体刷,并在实验室环境下对这种等离子体刷进行了测试,实验过程中发现了该种等离子体发生装置存在着长时间工作时发热量大并且其输出的脉冲电流不可控等缺点。脉冲电源技术在近几年的发展十分迅速,由于其输出的脉冲波形具有间断性的特点,这就能够很好地解决持续的直流放电所引起的发热量大的问题,并且脉电源输出的脉冲的还具有频率,占空比都可调的优点,所以设计一种快速可调脉冲电源用于大气压辉光放电产生等离子体就具有了很强的现实价值。本文主要设计了一种可以用于驱动放电装置辉光放电的快速可调脉冲电源,并设计了一款双脉冲放电电路。该放电电路的优点就是快速可调脉冲电源在大气压中进行辉光放电时,能够产生更长的电晕,这样就可以产生更多的等离子体。为了解决单个IGBT开关管耐压无法达到10kV的问题,本文采用了两个IGBT串联分压的方法,并设计了一种复合型均压控制电路。通过在ORCAD CAPTURE软件中的仿真分析,证明了采用这种设计的双脉冲输出电路的可行性。本文选择了TMS320F2812芯片作为快速可调脉冲电源的控制系统的核心,最后详细叙述了控制系统的组成以及系统主要软件的设计。
[Abstract]:At present, it is an effective way to produce plasma by using AC power supply as the driving power to drive the discharge device to discharge DBD at atmospheric pressure. However, because of the security of AC power supply itself, In order to solve the security problem of AC power supply, a DC atmospheric cold plasma brush is designed at the beginning of this paper, in order to solve the security problem of AC power supply, a DC cold plasma brush is designed at the beginning of this paper, in order to solve the security problem of AC power supply, a DC cold plasma brush is designed at the beginning. This kind of plasma brush is tested in laboratory environment. It is found that this kind of plasma generator has many disadvantages such as large heat output and uncontrollable pulse current output during long working hours. The pulse power supply technology has been developing very rapidly in recent years. Because of the intermittent characteristic of the pulse waveform, it can solve the problem of large heat caused by the continuous DC discharge. The pulse output of the pulse power supply also has the advantages of adjustable frequency and duty cycle, so it has a strong practical value to design a fast adjustable pulse power supply for atmospheric pressure glow discharge to generate plasma. In this paper, a kind of fast adjustable pulse power supply which can be used to drive the glow discharge of discharge device is designed. A double pulse discharge circuit is designed. The advantage of this circuit is that the fast adjustable pulse power supply can produce longer corona when glow discharge is carried out in atmospheric voltage. In this way, more plasma can be produced. In order to solve the problem that a single IGBT switch cannot withstand voltage up to 10 kV, two IGBT series partial voltages are used in this paper. A kind of compound voltage sharing control circuit is designed, and the simulation analysis in ORCAD CAPTURE software is carried out. It is proved that the design of double pulse output circuit is feasible. In this paper, the TMS320F2812 chip is chosen as the core of the control system of the fast adjustable pulse power supply. Finally, the composition of the control system and the design of the main software of the system are described in detail.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN86

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