【正文】 道直流變電 行業(yè)及軋鋼用直流電動(dòng)機(jī) 傳動(dòng) 領(lǐng)域 ，甚至用于直流輸電。 以后 出現(xiàn) 的 水銀整流器（ Mercuryvapour thyratrons），其性能和晶閘管 挺 相似 的 。s Daily life in all areas, enter the new century power electronic technology, so more widely in power electronic technology research is more important. In recent years, more and more application in the national power electronics industry, some advanced technologies of the country, after processing of electric power electronic technology has reached more than half the total energy. This paper mainly introduces the MCU based on MCS 51 series threephase TC787 chip controlled rectifier bridge type all control circuit and the circuit principle of trigger circuit and control circuit and software consists of senior programming language C51. Specific operation by frequency voltage transformer in the threephase after under control chip at different moments of the pulse signal to control the SCR silicon rectifier is corresponding to load power DC. The control mode is the main advantages of high stability and reliability of output waveform characteristics of strong antijamming. Trigger circuit structure is simple, flexible control, temperature, control accuracy can be pensated by software, can adjust arbitrarily limits have won the wide recognition. And in many industrial control will get to good use. Keywords: thyrister MCS 51 singlechip Microcontroller triggering Angle threephase fullycontrolled bridge煙臺(tái)大學(xué)畢業(yè)論文（設(shè) 計(jì)） 1 目錄 第一章 緒論 ............................................................................................................... 1 研究背景和意義 .............................................................................................. 1 晶閘管發(fā)展的現(xiàn)狀 .......................................................................................... 1 電力電子技術(shù)的前景 ...................................................................................... 1 晶閘管的應(yīng)用 .................................................................................................. 2 第二章 主電路設(shè)計(jì)及原理 ....................................................................................... 4 主電路設(shè)計(jì) ...................................................................................................... 4 三相橋式全控整流電路電感性負(fù)載 .............................................................. 8 小結(jié) ................................................................................................................ 11 第三章 基于芯片 TC787 的三相六脈沖晶閘管觸發(fā)電路設(shè)計(jì) ............................ 13 TC787 芯片介紹 ............................................................................................ 13 基本參數(shù)和特點(diǎn) ............................................................................................ 13 引腳排列、功能和用法 ................................................................................ 14 內(nèi)部結(jié)構(gòu)及工作原理簡(jiǎn)介 ............................................................................ 15 基于 TC787 的三相六脈沖晶閘管觸發(fā)電路的設(shè)計(jì)與調(diào)試 ....................... 16 第四章 控制及顯示系統(tǒng)原理 ................................................................................. 20 89C51 芯片介紹 ............................................................................................. 20 管腳說明 ............................................................................................... 20 振蕩器特性 ........................................................................................... 22 芯片擦除 ............................................................................................... 22 A/D 轉(zhuǎn)換 ........................................................................................................ 23 LCD1602 顯示 ............................................................................................... 25 控制及顯示系統(tǒng)設(shè)計(jì) .................................................................................... 27 系統(tǒng)結(jié)構(gòu)框圖 ....................................................................................... 28 單片機(jī) I/O 口分配表 ............................................................................ 28 系統(tǒng)工作說明 ....................................................................................... 28 第五章 單片機(jī)軟硬件抗干擾技術(shù) ......................................................................... 30 產(chǎn)生軟硬件干擾分析 .................................................................................... 30 單片機(jī)系統(tǒng)軟件的抗干擾 ............................................................................ 31 單片機(jī)系統(tǒng)中硬件抗干擾設(shè)計(jì) .................................................................... 35 煙臺(tái)大學(xué)畢業(yè)論文（設(shè) 計(jì)） 2 第六章 系統(tǒng)軟件設(shè)計(jì) ............................................................................................. 38 主程序設(shè)計(jì) .................................................................................................... 38 A/D 轉(zhuǎn)換程序 ................................................................................................ 39 第七章 結(jié)論 ............................................................................................................. 40 致謝 ............................................................................................................................. 41 參考文獻(xiàn) ..................................................................................................................... 42 附錄 ............................................................................................................................. 43 煙臺(tái)大學(xué)畢業(yè)論文（設(shè)計(jì)） 1 第一章 緒論 研究背景和意義 基于 TC787 芯片 設(shè)計(jì) 三相 橋式全控 整流觸發(fā) 電路 和基于 89C51 單片機(jī) 設(shè)計(jì) 控制及顯示電路，將觸發(fā)角和 整流輸出電壓 在 LCD 上顯示 。 并將在很多的工業(yè)控制中得到很好的運(yùn)用。此種控制方式其 主要優(yōu)點(diǎn)是輸出波形穩(wěn)定和可靠性高 抗干擾強(qiáng)的特點(diǎn)。 本文主要介紹基于 MCS— 51系列單片機(jī) TC787 芯片控制的三相橋式全控整流電路的主電路和觸發(fā)電路的原理及控制電路，軟件部分由 C51 高級(jí)語言編程。 分類號(hào) 編號(hào) 煙 臺(tái) 大 學(xué) 畢 業(yè) 論 文（ 設(shè) 計(jì) ） 三相橋式全控整流電路設(shè)計(jì) The design of Fullycontrolled threephase bridge rectifier circuit 申請(qǐng)學(xué)位： 工學(xué)學(xué)士學(xué)位 院