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1、--摘要近年來(lái),交流電機(jī)變頻調(diào)速及其相關(guān)技術(shù)的研究己成為現(xiàn)代電氣傳領(lǐng)域的一個(gè)重要課題,隨著新的電力電子器件和微處理器的推出以及交流電機(jī)控制理論的發(fā)展，交流變頻調(diào)速技術(shù)還將會(huì)取得巨大進(jìn)步。本文對(duì)變頻調(diào)速理論，逆變技術(shù)，幾種PWM產(chǎn)生原理進(jìn)行了研究，在此基礎(chǔ)上設(shè)計(jì)了一種新型數(shù)字化變壓變頻調(diào)速系統(tǒng)，以8051控制專用集成芯片為核心，采用IGBT作為主功率器件，同時(shí)采用TLP250構(gòu)成IGBT的驅(qū)動(dòng)電路，整流電路采用二極管，可使功率因數(shù)接近1，并且只用一級(jí)可控的功率環(huán)節(jié)，電路結(jié)構(gòu)比較簡(jiǎn)單。本文在控制上采用恒f/V控制，同時(shí)，軟件程序使得參數(shù)的
2、輸入和變頻器運(yùn)行方式的改變極為方便，新型集成元件的采用也使得它的開(kāi)發(fā)周期短。關(guān)鍵詞：變壓變頻；8051；IGBT；恒f/VⅠ-.可修編.--AbstractInrecentyears,researchhasACMotorandrelatedtechnologiesbeeanimportanttopicinthefieldofmodernelectricaltransmission,alongwiththedevelopmentofnewpowerelectronicdevicesandmicroprocessoraswellasthe
3、launchofACmotorcontroltheory,ACvariablespeedtechnologywillalsomadegreatprogress.Inthispaper,thetheoryoffrequencycontrol,invertertechnology,severalPWMgenerationprinciplewerestudiedbasedonthisdesignofanewdigitalvariablevoltagevariablefrequencycontrolsystem,inordertocontro
4、lspecificintegratedchip8051core,usingIGBTasthemainpowerdevices,whileusingtheIGBTdrivingcircuitconstitutedTLP250,arectifyingcircuitusingadiode,allowsthepowerfactorcloseto1,andonlypartofthepowerlevelcontrolled,thecircuitconfigurationisrelativelysimple.Inthispaper,theconst
5、antf/Vcontrolinthecontrol,whilethesoftwareprogramenableschangingtheinputparametersandtheoperatingmodeisextremelyeasytodrive,thenewintegratedelementsalsomakesuseofitsshortdevelopmentcycle.Keywords:VVVF;8051;IGBT;constantf/V-.可修編.--Ⅱ目錄摘要...................................
6、......................................................................ⅠAbstract..................................................................................................Ⅱ1.設(shè)計(jì)任務(wù)和要求...................................................................................
7、11.1要求...............................................................................................11.2設(shè)計(jì)容........................................................................................12.變壓變頻調(diào)速系統(tǒng)組成及分析..........................................................
8、.32.1主電路與驅(qū)動(dòng)電路-.可修編.--...........................................................................32.2信號(hào)采集與故障綜合電
