变频技术毕业论文外文翻译

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1、附录：外文文献作者：吴尚庆原文出处：华南理工大学出版社，《变频器应用技术》FrequencyVariationSpeedControl1、TheSummaryOfFrequencyVariationSpeedControl1.1ThePopularityandProspectofFrequencyVariationSpeedControlTheelectricalmachineryexchangefrequencyconversionvelocitymodulationtechnologyistheelectricitys

2、aving,theimprovementtechnicalprocessimprovestheproductqualityandtheimprovementenvironment,theimpetustechnologyadvancementonemainmethodnowThefrequencyconversionvelocitymodulationbyitsoutstandingvelocitymodulationandthebrakingquality,thehighefficiency,thehighpowerfa

3、ctorandtheelectricitysavingeffect,thewidespreadapplicablescopeandothermanymeritsbythedomesticgrandfatherwasthoughtmosthasthedevelopmentfuturevelocitymodulationway.Theelectricaltransmissioncontrolsystemusuallybytheelectricmotor,thecontroldeviceandtheinformationinst

4、alls3partstobecomposed,theelectricaltransmissionrelatesusestheelectricmotorbytosavetheelectricalenergyandtocontrolthemachineryreasonablytheoperatingcondition，therealizationelectricalenergy-mechanicalenergytransformation，achieves，thehighproduction,thelowconsumption

5、goalhighquality.Theelectricaltransmissiondividesintodoesnotmodulatevelocityandmodulatesvelocitytwobigkinds，thevelocitymodulationisdividedtheexchangetomodulatevelocityandtodirectcurrentmodulatesvelocitytwoways.Thevariablespeedmotordirectlydoesnotsupplypowerbytheele

6、ctricalnetworkButthemachinerywhichdoesnotmodulatevelocityalongwithelectricpowerelectronictechnologydevelopmentthiskindoforiginalmanuscriptmoreandmoremanychangestothevelocitymodulationtransmissionbytosavetheelectricalenergyTheimprovementproductquality,enhancestheou

7、tputThereforethevelocitymodulationtransmissionisanimportantprofession,alreadyobtainedthecountrytotake,atpresenthadcertainscale.Inrecentyearsexchangedinthevelocitymodulationmosttobeactive,todevelopquickestisthefrequencyconversionvelocitymodulationtechnology,thefreq

8、uencyconversionvelocitymodulationisexchangesthevelocitymodulationfoundationandthebranchcontent.Thelastcenturytransformerappearancecausesthechangevoltage