10kw直流開關(guān)電源設(shè)計(jì)

1、本科生畢業(yè)設(shè)計(jì)（論文）I摘要開關(guān)電源具有效率高、體積小、重量輕等顯著特點(diǎn)。目前世界各國(guó)都有廣泛的應(yīng)用，特別是對(duì)大容量高頻開關(guān)電源的研究和開發(fā)已成為當(dāng)今電力電子學(xué)的主要研究領(lǐng)域，并派生了很多新的研究方向。本設(shè)計(jì)的題目為10kW直流開關(guān)電源的設(shè)計(jì)，直流開關(guān)電源的工作原理：電網(wǎng)輸送來(lái)的交流電經(jīng)整流濾波電路變?yōu)橹绷?，?jīng)過(guò)高頻逆變電路變?yōu)楦哳l交流，通過(guò)高頻變壓器將高頻交流電變壓，然后高頻交流電經(jīng)單相橋式整流濾波電路變?yōu)橹绷鳌８鶕?jù)直流開關(guān)電源的工作

2、原理確定設(shè)計(jì)方案，選擇三相橋式不控整流濾波電路作為主電路的輸入級(jí)電路，通過(guò)分析比較各種變化器的優(yōu)缺點(diǎn)，選用移相式全橋變換器，設(shè)計(jì)了高頻變壓器，選擇單相橋式整流電路作為主電路的輸出級(jí)電路，在電壓調(diào)節(jié)環(huán)節(jié)上，詳細(xì)分析了基于UC3825控制芯片的PWM控制電路。并根據(jù)任務(wù)要求完成了IGBT驅(qū)動(dòng)電路、系統(tǒng)反饋電路的、保護(hù)電路、輔助電源以及均流電路的設(shè)計(jì)。本次設(shè)計(jì)的10kW直流開關(guān)電源具有輸出電壓可調(diào)、輸出電流大、紋波小等特點(diǎn)。實(shí)驗(yàn)結(jié)果表明它基本

3、達(dá)到設(shè)計(jì)要求，從而驗(yàn)證了理論分析的正確性，具有廣闊的應(yīng)用前景。關(guān)鍵詞：變換器；開關(guān)電源；高頻變壓器；PWM控制本科生畢業(yè)設(shè)計(jì)（論文）III目錄第1章緒論.............................................................................................................11.1開關(guān)電源的簡(jiǎn)介........................

4、................................................................11.2開關(guān)電源的發(fā)展及國(guó)外現(xiàn)狀....................................................................11.3國(guó)內(nèi)開關(guān)電源的發(fā)展及現(xiàn)狀........................................................

5、............3第2章系統(tǒng)分析和設(shè)計(jì)方案確定.........................................................................52.1系統(tǒng)整體概述.............................................................................................52.2變換器的選擇.......

6、......................................................................................62.3控制電路的實(shí)現(xiàn).........................................................................................62.4整流濾波電路的選擇.....................

7、...........................................................82.4.1輸入整流濾波回路.........................................................................82.4.2輸出整流濾波回路............................................................

8、.............8第3章開關(guān)電源主電路的設(shè)計(jì).............................................................................93.1開關(guān)電源的設(shè)計(jì)要求................................................................................93.2主電路組成框圖............

9、............................................................................93.2.1輸入整流濾波電路.......................................................................103.2.2移相式全橋變換器的設(shè)計(jì).........................................

10、...................123.2.3輸出整流濾波電路.......................................................................16第4章控制電路的設(shè)計(jì).......................................................................................194.1PWM集成控制器的基本

11、原理................................................................194.2高速脈寬調(diào)制器UC3825.......................................................................194.2.1主要特點(diǎn)......................................................

12、.................................214.2.2極限參數(shù).......................................................................................214.2.3內(nèi)部電路工作原理.......................................................................224

13、.3UC3825的調(diào)試........................................................................................244.4反饋電路的設(shè)計(jì)......................................................................................25第5章保護(hù)電路的設(shè)計(jì)...........

14、............................................................................285.1軟啟動(dòng)電路的設(shè)計(jì)..................................................................................285.2過(guò)流過(guò)壓保護(hù)......................................