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1、交流变频器的应用(E700系列)一、简介变频器是由计算机控制电力电子器件,将工频交流电变为频率和电压可调的三相交流电的电器设备,用以驱动交流异步(同步)电动机进行变频调速。变频器的出现,使交流电动机的调速变得和直流电动机一样方便,并可由计算机联网控制,因此,得到了广泛的应用,其发展前景广阔。表1变频调速的效果应用目的应用范围及效果节能风机、泵类、采油、挤压机和搅拌机等。通过调节电动机转速达到节能目的,通过节能在1~2年内即可收回改造成本。自动化提高搬运机械停止位置的精度;提高生产线速度、控制精度;采用有反馈装置的流量控制实现自动化。提高产品质量生产加工实现最佳速度控制及协调生产线内各装置的
2、速度,使其同步、同速,以提高产品的质量和加工精度。提高生产率根据产品种类联网控制,实现生产线的最佳速度,提高生产率。增加设备使用寿命采用对设备不产生冲击的起动,停止及空载低速运行等方式,增加设备的使用寿命。增加舒适度电梯、电车等,采用平滑加速、减速,以提高乘坐的舒适性;改变空调间断运行为变速连续运行,使室内温度差减小,增大环境舒适度。alliedmechanicalmaintenancegroup,lawnmaintenance,plantprotectiongroup.Establishmentofconservationofgardenplantsinlongsections,prof
3、essionalengineers,professionaltechniciansandotherrelatedjobs.1,themaintenanceleadresponsibilities(1)familiarwiththeGroup'sfoundationsofpoliticalthought,technology,culture,workattitudes,feelingsandemotions,habitsandotherpersonalproblems,easytowork.(2)beforework,qualityofwork,requirementsengineering
4、,safety,mechanicalequipmentandsomeofthetechnicalissuesseriouslydisclosuretoworkers,andkeeptheinformationinwriting.(3)whenassigningproductiontaskstotheworkers,toimplementsafetymeasures,completethetasktodoself-examinationrecord.(4)sectionchiefsbevanguardofwork,muststepforwardarefamiliarwiththereleva
5、ntbusiness,workinthefield,hard,dirtywork,heavyworkneedtobeattheheadofworktodo"beforechargeinandretreat."(5)payattentiontoeveryteam,everyprocessofclosecooperationandcoordination,basedonthesituationasany,check"playclean"constructiondiariesanddayinformation.(6)thecommunity"activeconservation,wastecri
6、mes",sectionchiefsbesuretoleadthestaffdothriftandcombatwaste.(7)forviolationofconstructionlaws,adversequality,safetyandengineeringprogressofunusualtohavethecouragetosucceed,stop.(8)Unityisstrength,sectionchiefisthecoreoftheconservationwork,somodest.2,professionalengineerjobdescriptionofgardenplant
7、s(1)implementthenationalconstructionengineeringqualityandsafetystandards,normsandregulations,combinedwithengineering,development,implementingspecificmeasures.(2)toprocesstheprojecthasoverallresponsibilityforallte