本文選題：靜電除塵器　切入點(diǎn)：高頻電源　出處：《昆明理工大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：近年來,環(huán)境問題日益嚴(yán)重,環(huán)境保護(hù)受到各國越來越多的重視。靜電除塵是一種非常有效的減少大氣污染的設(shè)備,而傳統(tǒng)工頻電源耗能高、價(jià)格昂貴、除塵效率較低,已經(jīng)逐漸不能滿足現(xiàn)代除塵的要求。隨著數(shù)字控制技術(shù)的發(fā)展,發(fā)展高頻電源技術(shù)逐漸得到認(rèn)可。 首先,本文介紹了靜電除塵工作原理和國內(nèi)外研究的現(xiàn)狀,分析了工頻電源的特點(diǎn)和不足,指出高頻電源是靜電除塵的發(fā)展方向。分析了高頻電源在理想狀態(tài)和實(shí)際狀態(tài)下的工作模式。在實(shí)際狀態(tài)下,分為兩種工作模式,比較兩者的優(yōu)缺點(diǎn),然后選擇出合適的工作模式。根據(jù)設(shè)計(jì)要求選擇合適的主電路參數(shù),將控制系統(tǒng)主要分為采樣保護(hù)電路、PWM控制電路和驅(qū)動(dòng)電路等。設(shè)計(jì)了水冷系統(tǒng)對高頻電源進(jìn)行保護(hù)。其次,根據(jù)串并聯(lián)電路的電路特性,選擇適合本系統(tǒng)調(diào)頻調(diào)壓的PID閉環(huán)控制方式；通過輸出電壓和輸出電流的變化判斷閃絡(luò)是否發(fā)生；根據(jù)除塵器內(nèi)部電場的要求,實(shí)現(xiàn)了三段式最佳火花率控制；水冷系統(tǒng)采用液體冷卻柜技術(shù)對電源制冷。最后,在實(shí)習(xí)單位的幫助下,完成了實(shí)驗(yàn),并記錄實(shí)驗(yàn)數(shù)據(jù)和結(jié)果分析。
[Abstract]:In recent years, environmental problems have become more and more serious, and environmental protection has been paid more and more attention by many countries. Electrostatic dust removal is a very effective equipment to reduce air pollution, while traditional power supply has high energy consumption, high price and low dust removal efficiency. With the development of digital control technology, the development of high frequency power supply technology has been gradually recognized. First of all, this paper introduces the working principle of electrostatic dusting and the current research situation at home and abroad, and analyzes the characteristics and shortcomings of power frequency power supply. It is pointed out that high frequency power supply is the developing direction of electrostatic dusting. The working mode of high frequency power supply in ideal state and actual state is analyzed. In the actual state, it is divided into two working modes, and the advantages and disadvantages of the two modes are compared. According to the design requirements, the control system is mainly divided into sampling protection circuit and PWM control circuit and driving circuit. The water cooling system is designed to protect the high frequency power supply. According to the circuit characteristics of series-parallel circuit, the PID closed-loop control mode suitable for the frequency modulation and voltage regulation of the system is selected, the flashover is judged by the variation of output voltage and output current, and according to the requirements of the electric field inside the dust collector, The three-stage optimal spark rate control is realized. The water cooling system uses the liquid cooling cabinet technology to cool the power supply. Finally, with the help of the practical unit, the experiment is completed, and the experimental data and the analysis of the results are recorded.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：X701.2;TN86

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