本文關(guān)鍵詞： 等離子體 脈沖電源 快速 可調(diào) TMS320F2812　出處：《安徽理工大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：目前應(yīng)用交流電源作為驅(qū)動電源來驅(qū)動放電裝置在大氣壓下進行DBD放電是產(chǎn)生等離子體的一個有效的途徑,但由于交流電源自身安全性等的缺點,這就很大的限制了以交流電源作為驅(qū)動電源的DBD放電裝置產(chǎn)生等離子體的應(yīng)用范圍。為了解決上述交流電源安全性問題,本文在一開始設(shè)計了一種直流大氣壓冷等離子體刷,并在實驗室環(huán)境下對這種等離子體刷進行了測試,實驗過程中發(fā)現(xiàn)了該種等離子體發(fā)生裝置存在著長時間工作時發(fā)熱量大并且其輸出的脈沖電流不可控等缺點。 脈沖電源技術(shù)在近幾年的發(fā)展十分迅速,由于其輸出的脈沖波形具有間斷性的特點,這就能夠很好地解決持續(xù)的直流放電所引起的發(fā)熱量大的問題,并且脈電源輸出的脈沖的還具有頻率,占空比都可調(diào)的優(yōu)點,所以設(shè)計一種快速可調(diào)脈沖電源用于大氣壓輝光放電產(chǎn)生等離子體就具有了很強的現(xiàn)實價值。 本文主要設(shè)計了一種可以用于驅(qū)動放電裝置輝光放電的快速可調(diào)脈沖電源,并設(shè)計了一款雙脈沖放電電路。該放電電路的優(yōu)點就是快速可調(diào)脈沖電源在大氣壓中進行輝光放電時,能夠產(chǎn)生更長的電暈,這樣就可以產(chǎn)生更多的等離子體。為了解決單個IGBT開關(guān)管耐壓無法達到10kV的問題,本文采用了兩個IGBT串聯(lián)分壓的方法,并設(shè)計了一種復(fù)合型均壓控制電路。通過在ORCAD CAPTURE軟件中的仿真分析,證明了采用這種設(shè)計的雙脈沖輸出電路的可行性。本文選擇了TMS320F2812芯片作為快速可調(diào)脈沖電源的控制系統(tǒng)的核心,最后詳細敘述了控制系統(tǒng)的組成以及系統(tǒng)主要軟件的設(shè)計。
[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.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN86

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