本文選題：介質(zhì)阻擋放電　切入點：臭氧發(fā)生器　出處：《廣東工業(yè)大學》2015年碩士論文　論文類型：學位論文

【摘要】：臭氧因其獨特的物理性質(zhì)被廣泛的應(yīng)用于生活、工業(yè)生產(chǎn)、醫(yī)療保健等眾多領(lǐng)域。臭氧的產(chǎn)生主要有電解法、紫外線照射法、放射化學法和介質(zhì)阻擋放電法,其中介質(zhì)阻擋放電法因其獨特的優(yōu)勢被現(xiàn)代科研工作人員廣泛的采納。現(xiàn)階段,DBD型臭氧發(fā)生器的供電電源大多采用串并聯(lián)諧振式逆變電源,通過調(diào)節(jié)施加在臭氧發(fā)生器上的正弦或準正弦激勵的幅值和頻率來調(diào)節(jié)發(fā)生器的放電功率,進而調(diào)節(jié)臭氧發(fā)生器的產(chǎn)量。但DBD型臭氧發(fā)生器放電的效率與發(fā)生器端電壓幅值及充電階段與放電階段所占時間比密切相關(guān),即只有充電階段在整個工作周期內(nèi)所占時間比少且在放電階段發(fā)生器上電壓維持在較高電壓值(該數(shù)值取決于放電管的耐壓)時,臭氧發(fā)生器才可能得到較高的放電效率。因此從這個角度看,采用正弦波作為DBD型臭氧發(fā)生器的激勵源,并不是一種高效的激勵源。為解決這一問題,本文主要從尋求新型拓撲結(jié)構(gòu)來產(chǎn)生高效激勵源、電源系統(tǒng)主要電氣量的電氣調(diào)節(jié)特性、多功能硬件回路的實現(xiàn)和采用數(shù)字信號處理器進行數(shù)字化控制等四個方面,對DBD型臭氧發(fā)生器供電電源進行了研究與探討,本文的主要研究工作分成了以下幾個部分：(1)為滿足后續(xù)供電電源的設(shè)計需求,本文對DBD型臭氧發(fā)生器的等效模型和DBD型臭氧發(fā)生器的介質(zhì)參數(shù)的測量進行了分析。結(jié)合目前國內(nèi)外對等效模型的研究,建立了一個能夠準確預(yù)測DBD型臭氧發(fā)生器負載特性的連續(xù)等效模型,將臭氧發(fā)生器等效為介質(zhì)電容與非線性電阻相串聯(lián)的等效電路模型；為獲得DBD型臭氧發(fā)生器的負載參數(shù),本文分析了目前廣泛被采用的Lissajous圖形測量法,采用多組測量的方法對Lissajous圖形中指定的關(guān)鍵點進行計算,獲得了比較準確的DBD型臭氧發(fā)生器負載參數(shù)。(2)本文利用能反映介質(zhì)阻擋放電電路時空關(guān)系的等效電路對常用的激勵(正弦波、方波、三角波、梯形波)下介質(zhì)阻擋放電電路(Dielectric Barrier Discharge：DBD)的放電效率進行了分析,得出了交變梯形激勵是一種非常適合DBD負載的一種激勵源。在梯形激勵合成思路的基礎(chǔ)上,尋求了一種能夠在DBD負載上產(chǎn)生交變梯形波的雙頻諧振式逆變供電電源拓撲結(jié)構(gòu)。(3)基于這種拓撲結(jié)構(gòu)設(shè)計了逆變電路中各個開關(guān)管的驅(qū)動時序,確保了DBD型臭氧發(fā)生器上的激勵為交變梯形激勵源同時又能方便實現(xiàn)調(diào)功的需求；分析了該供電電源在不同模態(tài)下的等效運行圖,獲得了逆變電源在不同模態(tài)下的數(shù)學約束方程,求解出了臭氧發(fā)生器的主要電氣參數(shù)的數(shù)學表達式,分析了DBD型臭氧發(fā)生器主要電氣參數(shù)的電氣調(diào)節(jié)特性。(4)本文采用DSP-TMS320F2812為控制核心的全數(shù)字化的控制方式。采用了TMS320F2812的事件管理器產(chǎn)生PWM波的原理和死區(qū)調(diào)節(jié)電路為整個逆變電路提供了適合的驅(qū)動波形；同時本文也詳細的設(shè)計了整個供電電源的模塊硬件電路圖；對EMI濾波電路、單相不可控整流電路、LC濾波電路、雙頻逆變主電路的參數(shù)設(shè)計進行了詳細的公式推導(dǎo),同時對各個電路的器件的型號選型進行了分析。(5)為驗證本文所提出的梯形激勵下的DBD型臭氧發(fā)生器供電電源方案理論分析的正確性,本文從實際出發(fā),在該供電電源硬件系統(tǒng)的基礎(chǔ)上分別搭建了仿真模型和實驗平臺,給出了該電路的實驗波形和仿真波形。實驗波形、仿真波形與理論分析波形非常吻合,從而驗證了供電電源設(shè)計的正確性和可行性。
[Abstract]:Ozone due to its unique physical properties have been widely used in many industrial production, life, health care and other fields. The ozone are generated by electrolysis, ultraviolet irradiation, radiation chemical method and dielectric barrier discharge, the dielectric barrier discharge is adopted widely in the modern research staff due to its unique advantages. Stage, the power supply of the DBD type ozone generator mostly adopts the series parallel resonant inverter, by adjusting the applied ozone generator in sine or quasi sinusoidal excitation amplitude and frequency of discharge power to regulate the generator, and then adjust the output of the ozone generator. But the DBD type ozone generator discharge efficiency and generator terminal voltage amplitude and charging the stage and discharge stage took longer than the closely related, that is only charging stage in the whole work cycle took longer than less and in the discharge happened on stage The voltage is maintained at a high voltage value (the value depends on the voltage of the discharge tube), the ozone generator can discharge high efficiency. So from this point of view, using sine wave as the DBD type ozone generator excitation source, and it is not an efficient excitation source. To solve this problem, this article mainly from the seek new topology to generate efficient excitation source, the electrical power system main electrical quantity regulation characteristics, and the use of digital signal processor for digital control of four aspects such as function of hardware circuit, the DBD type ozone generator power supply was studied and discussed in this paper, the main research work of this paper is divided into the following sections: (1) to meet the design requirements of subsequent power supply, the measurement and analysis of the parameters of the DBD type ozone generator and the equivalent model of the DBD type ozone generator are combined. 鐩墠鍥藉唴澶栧絳夋晥妯″瀷鐨勭爺絀，

本文編號：1572882