铝厂焙烧车间引风机的高压变频调速系统设计VIP免费

摘要变频调速技术从诞生到现在，一直经历着飞速的发展。变频调速以节能低耗、提高生产效率等突出优势，已成为企业提高产品市场占有率和竞争力的有效手段之一，其中大容量传动的高压变频调速技术也得到了广泛的应用。高压电机利用高压变频器可以实现无级调速，满足生产工艺过程对电机调速控制的要求,以提高产品的产量和质量。但是由于器件技术和逆变技术还不十分成熟，在变频器使用过程中还存在一些不尽人意的的地方；因此如何满足生产工艺要求、提高高压变频器可靠性是每个业内企业技术攻关和进步的主要难题。论文设计的内容是铝厂焙烧车间引风机的高压变频调速系统。在分析以上不足因素的同时，设计着手于系统的节能和运行可靠性两方面。论文主要对高压变频器和高压变频调速系统做了具体阐述和设计；首先介绍了高压变频器的发展概况及趋势并做了市场分析，在高压变频器选型这方面为实现变频器应用的最佳性价比提供参考。其次，论文给出了高压变频调速系统的设计主回路。主系统针对“一拖一”即一台变频器控制一台电机，实现工频/变频切换的功能。在对高压变频器设计中主要涉及了移相变压器、功率单元和控制等系统的设计。设计过程中不仅要求满足工艺要求，而且保证整个系统的可靠性运行。特别是DCS控制系统参与控制高压变频调速系统，大大提高了高压变频器的运行可靠性。最后，从作者自身的学习和总结，预测了高压变频技术的发展和技术发展方向。关键词：高压变频器高压电机节能DCSAbsractFrequencycontroltechnologyfrombirthtonow,Ithasbeenexperiencingrapiddevelopment.FrequencyControltohighlighttheadvantagesofenergysavingandlowconsumption,improveproductionefficiency,hasbecomeoneofaneffectivemeanstoimproveproductmarketshareandcompetitiveness.High-voltagelarge-capacitytransmissionfrequencyconversiontechnologyhasalsobeenwidelyused.Thehigh-voltagemotorswithhigh-voltageinvertercanrealizesteplessspeedregulation,Meettherequirementsoftheproductionprocessofthemotorspeedcontrol,Toimproveproductyieldandquality.However,duetothedevicetechnologyandinvertertechnologyisnotverymature,therearestillsomeunsatisfactoryplaceintheinverterusingtheprocess.Howtomeettherequirementsofproductionprocess,improvethereliabilityofhighvoltageinverteristhemainchallengeoftheindustry'stechnologyresearchandprogress.Paperisthecontentofthedesignofhighpressureofroastingaluminumplantworkshopinduceddraftfanvariablefrequencyspeedregulationsystem.Ontheanalysisoftheabovefactorsandinsufficient,designofenergysavingandgetdowntothesystemoperationreliabilitytwoaspects.Papermianlytothehighvoltageinverterandthehighvoltagevariablefrequencyspeedregulationsystemforthespecificdesign;First,introducestheconverterdevelopmentsituationandtrendsandmadeamarketanalysis,thehighvoltageinverterintheselectionfortherealizationoftheoptimalperformanceandpriceratioofthefrequencyconverterapplicationtoprovidethereference.Secondly,thispaperanalyzesthedesignofhighvoltagevariablefrequencyspeedregulationsystemofmianloop.Thesystemisainvertercontrolamotor,realizeindustrialfrequency/frequencyconversionswitchfunction.Inthehighvoltageinverterinthedesignphaseshiftinginvolvedwiththemiantransformerandpowerunitandcontrolsystemdesign.Designprocessrequiresnotonlymeetthetechnologicalrequirement,andensurethatthewholeofthereliabilityofthesystemoperation.EspeciallyDCScontrolsystemandtheconnectionbetweenthehighvoltageinvertercommunication,greatlyimprovingthereliabilityofthehighvoltageinverter.Atlast,fromtheauthor,sownlearningandsummarized,andforecaststhehighvoltagevariablefrequencytechnologydevelopmentandtechnologydevelopmentdirection.Keywords:High-voltageinverterHighvoltage...