本科畢業(yè)論文（設(shè)計）中頻感應(yīng)加熱電源的設(shè)計（整流電路控制電路的設(shè)計）學(xué)生姓名：所在院（系）：機電學(xué)院所學(xué)專業(yè)：機械設(shè)計制造及其自動化導(dǎo)師姓名：完成時間：1摘要感應(yīng)加熱電源具有加熱效率高，速度快，可控性好，易于實現(xiàn)高溫和局部加熱，易于實現(xiàn)機械化和自動化等優(yōu)點，目前已在金屬熔煉、工件透熱、淬火、焊接、鑄造、彎管、表面熱處理等行業(yè)得到了廣泛的應(yīng)用。本設(shè)計研究了中頻感應(yīng)加熱及其相關(guān)技術(shù)的發(fā)展、現(xiàn)狀和趨勢，并在較全面的論述基礎(chǔ)上，對2.5kHz/250kW可控硅中頻感應(yīng)加熱電源的整流電路以及控制電路進行了設(shè)計。本文設(shè)計的電源電路可用于大型機械熱加工設(shè)備的感應(yīng)加熱電源。整流電路采用三相橋式全控整流電路，其電路結(jié)構(gòu)簡單，使電源易于推廣；控制策略選用雙閉環(huán)反饋控制系統(tǒng)，改善了信號遲滯的缺點，為以后研制大功率、超音頻的感應(yīng)加熱電源打下了基礎(chǔ)。關(guān)鍵詞：可控硅中頻電源；感應(yīng)加熱；逆變；保護電路2DesignofInductionheatingpowerofmediumfrequencyAbstractInductionheatingpowerisequippedwithlotsofadvantagessuchashighheatingefficiency,fastspeed,goodcontrollability,whichispronetomakeheatingofhighandpartialtemperature，andrealizemechanizationandautomation.Atpresentmetalmelting,workpieceheatpenetration,quenching,welding,casting,elbowpiece,surfaceheatingprocessinghasbeenwidelyapplied.Inductionheatingofmediumfrequencyanddevelopment,currentsituation,andtendencyrelatedtechnologyhasbeenstudied，andhavemadequitecomprehensiveandintheprofoundelaborationfoundation,thisarticlehascarriedonthedesigntomaincircuitandtheinversioncontrolofthe2.5kHz/250kWsilicon-controlledrectifierintermediatefrequencyinductionheatingpower.Thisdesignisusedforbigfacilityofmechanicalheatingprocessing.Structureofrectificationcircuitiseasy,whichmakespowerpopularizedeasily.Three-phasebridgerectificationcircuitisusedinRectificationcircuit.Rectificationcircuitusesfeedbackcontroloftwoclosedloop,improvingthedisadvantages.Thefoundationforinventinginductionheatingpowerofbigpowerandsuperaudioismade.Keywords：ControllablesiliconmediumpowerInductionheatingInverterProtectcircuit3目錄1.緒論.41.1感應(yīng)加熱電源的特點和應(yīng)用.41.2感應(yīng)加熱電源的發(fā)展階段.41.3感應(yīng)加熱電源發(fā)展的主要因素.51.4感應(yīng)加熱電源的發(fā)展趨勢.52.感應(yīng)加熱電源.62.1基本工作原理.62.2基本結(jié)構(gòu).73.整流電路設(shè)計.83.1整流電路的分類.83.2整流電路的選擇.83.3三相橋式全控整流電路.93.4整流電路的參數(shù)設(shè)計.114.控制電路設(shè)計.124.1控制電路系統(tǒng)的概述.124.2控制電路的結(jié)構(gòu)與原理.124.3控制電路的作用.144.4控制策略.144.52.5kHz/250kW感