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EVOLUTION OF MOTOR AND VARIABLE …

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, ,ControlTechniquesDrives~EmersonElectric ABSTRACTThepurposeofthispaperis nottodescribeindetailtheoperationandcons tructionofvariablefrequencydrives(VFD's) ,twospecificapplicationexamplesusingstan dardACdrivesintwodifferentindustrieswill beexploredgivingthereadera , a 's, ,earlyACvariablefrequencydrives(VFD)were bulky~ ,thereisanincreasingneedforenergyconserv ationandefficientuseofenergyenablingcomm ercialandindustrialfacilitiestominimizep roductioncosts, ~1997mustmeetthenewenergystandardsfoundi ntheNationalElectricalManufacturersAssoc iation(NEMA) , ,generalpurpose,T framesquirrel-eageinductionmotorunderNEM ADesignsA andB,through200hp.

EVOLUTION OFMOTORAND VARIABLE FREQUENCY DRIVE TECHNOLOGY Dale E. Roethemeyer, U.S. Electrical Motors Division ofEmerson Electric David R. Yankaskas, Control Techniques Drives~Emerson Electric ABSTRACT

  Electric, Drive, Motor

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