【正文】 .................. II 第 1 章 緒論 ............................................................................................................................ 1 課題背景 ..................................................................................................................... 1 現(xiàn)代逆變技術(shù) ............................................................................................................. 1 本課題的主要內(nèi)容和意義 ......................................................................................... 2 第 2 章 逆變功率器件的選擇 ................................................................................................ 3 逆變器用功率開(kāi)關(guān)器件 ............................................................................................. 3 器件的選擇 ................................................................................................................. 4 IGBT 的結(jié)構(gòu)和特點(diǎn) ......................................................................................... 4 IGBT 的基本特性 ............................................................................................. 5 IGBT 的擎住效應(yīng)和安全工作區(qū) ..................................................................... 8 IGBT 驅(qū)動(dòng)電路的要求 ..................................................................................... 8 IGBT 的保護(hù) ..................................................................................................... 9 逆變電路的選擇 ....................................................................................................... 10 逆變電路的介紹 ............................................................................................ 10 單相電壓 型逆變電路 .................................................................................... 11 三相電壓型逆變電路 .................................................................................... 12 逆變電路的選擇 ............................................................................................ 13 第 3 章 主電路設(shè)計(jì) .............................................................................................................. 15 系統(tǒng)的主電路及其工作原理 ................................................................................... 15 主電路的主要設(shè)計(jì)參數(shù) ................................................................................ 15 系統(tǒng)組成 ........................................................................................................ 15 系統(tǒng)的主電路圖 ............................................................................................ 16 系統(tǒng)的工作原理 ............................................................................................ 16 主電路的參數(shù)設(shè)計(jì) ................................................................................................... 16 斬波器的設(shè)計(jì) ................................................................................................ 16 整流與逆變電路 ............................................................................................ 18 湖南工程學(xué)院畢業(yè)設(shè)計(jì)論文 II 第 4 章 控制電路的設(shè)計(jì) ...................................................................................................... 21 控制電路 ................................................................................................................... 21 正弦脈寬調(diào)制波（ SPWM）的產(chǎn)生原理 ..................................................... 21 SA8282 特性特點(diǎn) ........................................................................................... 22 單片機(jī) AT89C51 最小系統(tǒng)及外圍擴(kuò)展芯片 ............................................... 26 驅(qū)動(dòng)電路 ................................................................................................................... 26 EXB840 功能介紹 .......................................................................................... 26 驅(qū)動(dòng)電路的設(shè)計(jì) ............................................................................................ 28 第 5 章 保護(hù)電路 .................................................................................................................. 29 過(guò)流保護(hù)回路設(shè)計(jì) ................................................................................................... 29 產(chǎn)生原因及危害 ............................................................................................ 29 過(guò)流保護(hù)電路 ................................................................................................ 29 工作原理 ........................................................................................................ 30 泵升電壓保護(hù)回路 ................................................................................................... 30 過(guò)（欠）壓保護(hù)回路的設(shè)計(jì) ................................................................................... 30 過(guò)壓保護(hù)電路 ................................................................................................ 30 緩沖吸收回路設(shè)計(jì) ........................................................................................ 31 結(jié)束語(yǔ) ...................................................................................................................................... 34 參考文獻(xiàn) .................................................................................................................................. 35 致謝 .......................................................................................................................................... 35 附錄 系統(tǒng)電氣原理圖 ............................................................................................................ 39 湖南工程學(xué)院畢業(yè)設(shè)計(jì)論文 I 15kVA 逆變電源設(shè)計(jì) 摘要 ：本次設(shè)計(jì)的容量 15kVA，頻率為 50Hz 的逆變電源 ，在分析以 IGBT 為主要器件的逆變器基礎(chǔ)上，給出了直流斬波電路和三相全橋逆變電路的工作原理。 關(guān)鍵詞 ： IGBT；逆變器；斬波電路； SPWM；短路保護(hù) 湖南工程學(xué)院畢業(yè)設(shè)計(jì)論文 II Designing of 15kVA Inverter Power ABSTRACT: This paper has designed a inverter power supply of volume 15kVA, working frequency 50HZ, based on that has analyzed the characteristic of IGBT (Insulated Gate Bipolar Transistor). It was provided the working theory of DC Chopper and bridge type invert circuit. The inverter power supply first turn the 750 DC volt into 440 DC volt by Buck