【摘要】：電除塵器是一種高效、節(jié)能、運維簡單并且廣泛應(yīng)用于火電、水泥、冶金、化工等行業(yè)的環(huán)保除塵設(shè)備,對于減少粉塵的排放具有重要作用。電除塵器工作時必須有高壓電源對其供電,采用不同的供電電源,其產(chǎn)生的除塵效果往往大相徑庭。采用高壓脈沖電源供電不僅能有效改善采用傳統(tǒng)高壓直流電源供電時出現(xiàn)的電暈電壓低和反電暈現(xiàn)象、提高除塵效率而且能降低電除塵器的能耗。因此,研究和設(shè)計電除塵用的高頻高壓脈沖電源具有極其重要的意義。 本文首先介紹了電除塵用高頻高壓脈沖電源系統(tǒng)的結(jié)構(gòu),然后分析比較幾種常用的功率變換電路,并從中選擇移相全橋ZVS軟開關(guān)電路作為電源主電路結(jié)構(gòu)；詳細(xì)分析并設(shè)計移相全橋ZVS軟開關(guān)電路的相關(guān)參數(shù),然后還分析比較了幾種常用的脈沖形成電路,并介紹了多模塊脈沖疊加技術(shù)和同步驅(qū)動技術(shù),以此設(shè)計了高壓脈沖形成電路。高頻變壓器是電源的重要組成部分之一,本文詳細(xì)介紹了數(shù)種磁芯材料并確定磁芯型號及參數(shù),同時給出變壓器的設(shè)計步驟并確定變壓器的參數(shù),最后還進(jìn)行了變壓器的絕緣設(shè)計并確定繞制方式。 基于DSP的控制系統(tǒng)實現(xiàn)了電源的數(shù)字化控制以及實時顯示輸出的功能。文中設(shè)計了基于TMS320LF2407的電源控制部分的硬件電路和軟件程序,其中硬件電路設(shè)計部分包括輔助電源、驅(qū)動電路以及電源輸出的采樣電路等；軟件程序設(shè)計主要有用于全橋驅(qū)動的移相脈沖PWM程序、采樣信號的AD轉(zhuǎn)換程序以及穩(wěn)定調(diào)節(jié)電源輸出的PI控制程序。 最后根據(jù)論文設(shè)計方案研制了一臺輸出為16kW的電源樣機(jī),并測試分析了不同輸出下的波形；同時用研制的樣機(jī)進(jìn)行除塵實驗。從測得的波形來看,變換器的超前橋臂和滯后橋臂完成了ZVS軟開關(guān),電源輸出端得到了幅值、頻率和脈寬都可調(diào)的高壓脈沖方波；從除塵效果來看,其明顯優(yōu)于高壓直流電源,驗證了設(shè)計方案的正確性。
[Abstract]:ESP is a kind of environmental protection dedusting equipment with high efficiency, energy saving, simple operation and maintenance, which is widely used in thermal power, cement, metallurgy, chemical industry and so on. It plays an important role in reducing dust emission. High voltage power supply must be used in the operation of ESP, and the dust removal effect is often very different when different power supply is used. The use of high voltage pulse power supply can not only effectively improve the phenomenon of low corona voltage and reverse corona, but also improve the dust removal efficiency and reduce the energy consumption of the electrostatic precipitator when the traditional high voltage DC power supply is used. Therefore, it is of great significance to study and design the high-frequency and high-voltage pulse power supply. This paper first introduces the structure of high frequency and high voltage pulse power supply system for electrostatic precipitator, then analyzes and compares several commonly used power conversion circuits, and selects the phase-shifted full-bridge ZVS soft switch circuit as the main circuit structure of the power supply. The related parameters of phase-shifted full-bridge ZVS soft switching circuit are analyzed and designed in detail. Then, several common pulse forming circuits are analyzed and compared, and the multi-module pulse superposition technology and synchronous drive technology are introduced. A high voltage pulse forming circuit is designed. High frequency transformer is one of the important parts of power supply. This paper introduces several kinds of magnetic core materials and determines the type and parameters of magnetic core in detail. At the same time, the design steps of transformer and the parameters of transformer are given. Finally, the insulation design of transformer is carried out and the winding mode is determined. The control system based on DSP realizes the digital control of power supply and the function of real-time display and output. The hardware circuit and software program of the power supply control part based on TMS320LF2407 are designed in this paper. The hardware circuit design part includes the auxiliary power supply, the driving circuit and the sampling circuit of the power output. The software program includes phase-shift pulse PWM program for full-bridge drive, AD conversion program for sampling signal and Pi control program for stabilizing the output of power supply. Finally, according to the design of the paper, a power source prototype with 16kW output is developed, and the waveforms under different outputs are tested and analyzed, at the same time, the dust removal experiment is carried out with the developed prototype. According to the measured waveforms, the ZVS soft switch is accomplished by the leading and lagging arm of the converter, and the amplitude, frequency and pulse width of the high voltage pulse square wave can be adjusted at the output end of the power supply, which is obviously superior to the high voltage DC power supply in terms of the dust removal effect. The correctness of the design is verified.
【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】：X701.2;TN86

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 阮新波，嚴(yán)仰光;采用輔助諧振網(wǎng)絡(luò)實現(xiàn)零電壓開關(guān)的移相控制全橋變換器[J];電工技術(shù)學(xué)報;1998年02期

2 沈燕群,姚剛,何湘寧;帶隔直電容的移相全橋DC/DC變換器特性分析[J];電力電子技術(shù);2005年03期

3 雷丹;袁愛進(jìn);陳汝義;;基于TMS320LF2407的新型直接轉(zhuǎn)矩控制系統(tǒng)[J];電力自動化設(shè)備;2006年08期

4 肖永濤;朱理;;移相全橋ZVS軟開關(guān)電源研究[J];電源技術(shù);2011年05期

5 梅建偉;蔣云峰;;串聯(lián)諧振軟開關(guān)技術(shù)在ESP電源中的應(yīng)用研究[J];電源世界;2007年07期

6 馮艷斌;張勛;張麗;;開關(guān)電源EMI濾波器設(shè)計[J];電子科技;2010年06期

7 耿濤;李格;曹亮;周銀貴;王海田;李U，

本文編號：2157831