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1、FrequencyVariationSpeedControl1ThePopularityandProspectofFrequencyVariationSpeedControlTheelectricalmachineryexchangefrequencyconversionvelocitymodulationtechnologyistheelectricitysaving,theimprovementtechnicalprocessimprovestheproductqualityandtheimprovementen
2、vironment,theimpetustechnologyadvancementonemainmethodnowThefrequencyconversionvelocitymodulationbyitsoutstandingvelocitymodulationandthebrakingquality,thehighefficiency,thehighpowerfactorandtheelectricitysavingeffect,thewidespreadapplicablescopeandothermanymer
3、itsbythedomesticgrandfatherwasthoughtmosthasthedevelopmentfuturevelocitymodulationway.Theelectricaltransmissioncontrolsystemusuallybytheelectricmotor,thecontroldeviceandtheinformationinstalls3partstobecomposed,theelectricaltransmissionrelatesusestheelectricmoto
4、rbytosavetheelectricalenergyandtocontrolthemachineryreasonablytheoperatingcondition,therealizationelectricalenergy-mechanicalenergytransformation,achieves,thehighproduction,thelowconsumptiongoalhighquality.Theelectricaltransmissiondividesintodoesnotmodulatevelo
5、cityandmodulatesvelocitytwobigkinds,thevelocitymodulationisdividedtheexchangetomodulatevelocityandtodirectcurrentmodulatesvelocitytwoways.ThevariablespeedmotordirectlydoesnotsupplypowerbytheelectricalnetworkButthemachinerywhichdoesnotmodulatevelocityalongwithel
6、ectricpowerelectronictechnologydevelopmentthiskindoforiginalmanuscriptmoreandmoremanychangestothevelocitymodulationtransmissionbytosavetheelectricalenergyTheimprovementproductquality,enhancestheoutputThereforethevelocitymodulationtransmissionisanimportantprofes
7、sion,alreadyobtainedthecountrytotake,atpresenthadcertainscale.Inrecentyearsexchangedinthevelocitymodulationmosttobeactive,todevelopquickestisthefrequencyconversionvelocitymodulationtechnology,thefrequencyconversionvelocitymodulationisexchangesthevelocitymodulat
8、ionfoundationandthebranchcontent.Thelastcenturytransformerappearancecausesthechangevoltagetobecomeverymucheasy,thushasaccomplishedahugeelectricpowerprofession.Sincelongago,t